Ganglia are primarily made up of somata and dendritic structures, which are bundled or connected. 4: Autonomic Short and Long Reflexes. Ganglionic neurons innervate visceral effectors . 2 B and 3). both somatic afferent and efferent neurons D. By Perrine Juillion / July 14, 2019. Most ganglion cells are sensory neurons that collect information from nerves. The dorsal root ganglia (or spinal ganglia) are described as nodule-like structures found on the posterior roots of each spinal nerve, which contain the soma (or cell bodies) of the afferent sensory nerves carrying sensory signals back to the central nervous system (Figure 33. an outer connective tissue capsule around the cell bodies of preganglionic motor neurons. My thesis aimed to study dynamic agrivoltaic systems, in my. the cell bodies of motor neurons. Step 1. The postganglionic neurons in the sympathetic chain ganglia are essential. A) Sympathetic B) Parasympathetic, Active after you have eaten a meal. The site(s) of origin of the preganglionic fibers of the parasympathetic nervous system is (are) the ____. d) All of these choices. dorsal root ganglia: A dorsal root ganglion (or spinal ganglion) is a nodule on a dorsal root of the spine that contains the cell bodies of nerve cells (neurons) that carry signals from sensory organs toward the appropriate integration center. The perineurium packages groups of nerve fibers together into bundles called fasiculi. both somatic afferent and efferent neurons Reset Selection Mark for Review. , the cardiovascular, gastrointestinal, genitourinary systems). A) Sympathetic B) Parasympathetic, Collateral ganglia. Autonomic ganglia contain ________. In most ganglia there are subsets of neurons with. synapses between postganglionic fibers and their effectors c. Preganglionic fibers release Ach, whch stimulates ganglionic neurons. brain stem and the sacral region of. Autonomic ganglia contain the cell bodies of autonomic nerves. Autonomic ganglia contain _____. Autonomic ganglia contain _____. a) Structurally, the autonomic nervous system consists of two main components: a sensory (input) component and a motor (output) component . Axons called postganglionic; begin at autonomic ganglia and. e. SNS centers are found within the thoracic and lumbar segments of the spinal cord, which is why it is also called the thoracolumbar division. Pelvic and bladder ganglia. Microscopic structure: Autonomic ganglia contain the ganglionic neurons, satellite glial cells, and small intensely fluorescent cells. Create flashcards for FREE and quiz yourself with an interactive flipper. Basal ganglia The term "ganglion" refers to the peripheral nervous system. The synapse between the two neurons occurs at a ganglion, or a collection of cell bodies. what is not a result of parasympathetic stimulation? dilation of the pupils. the cell bodies of motor neurons. Learning Objectives. J. Gray rami are gray because they contain. Autonomic ganglia contain ____. Both the brain and the lateral gray horns of the spinal cord. Ganglionic neurons innervate such things as. C) adipose tissue. All Osmosis Notes are clearly laid-out and contain striking images, tables, and diagrams to help visual learners understand complex topics quickly and efficiently. , Goridis, C. The thoracic splanchnic nerves mainly contain the preganglionic (presynaptic) sympathetic fibers. The first neuron is called a preganglionic neuron and resides in the brainstem or lateral horns of the spinal cord. Location of Autonomic Ganglia. Although they are intermingled within these ganglia, the. Terms: ganglion – a collection of cell bodies located outside the Central Nervous System. Each ganglion is enclosed within a capsule of fibrous connective tissue and contains neuronal somata and neuronal processes. are voluntary. These ganglia contain the cell bodies of sympathetic postganglionic neurons. ; postganglionic neuron: A nerve cell that is located. Howe. and more. Interoceptive and exteroceptive signals, and the corresponding coordinated control of internal organs and sensory functions, including pain, are received and orchestrated by multiple neurons within the peripheral, central and autonomic nervous systems. After emerging from the vertebral column the spinal nerves split into rami. The histological features of the sensory ganglia are similar to those of the autonomic ganglia apart from a few key differences. C. Autonomic ganglia contain the cell bodies of autonomic nerves. Three of the cranial nerves also contain autonomic fibers, and a fourth is almost purely a component of the autonomic system. the parasympathetic fibers of the ___nerves innervate smooth muscles of the eye that cause the lenses to bulge to accommodate close vision. The autonomic nervous system controls cardiac and smooth. A dorsal root ganglion (or spinal ganglion) is a nodule on a dorsal root of the spine that contains the cell bodies of nerve cells ( neurons ) that carry signals from sensory organs to the appropriate integration center. Key Terms. 16-1 Divisions of the ANS. [1,2] Notably, the highest density of. See full list on kenhub. B. Graduated from ENSAT (national agronomic school of Toulouse) in plant sciences in 2018, I pursued a CIFRE doctorate under contract with Sun’Agri and INRAE in Avignon between 2019 and 2022. Visceral efferent (VE) pathways that innervate smooth muscle, cardiac muscle, and glands involve two neurons and a synapse within an autonomic ganglion. The efferent vagus nerves contain a combination of preganglionic parasympathetic. A. sensory (afferent) neurons - input to CNS from sensory receptors; dendrites. from those that contain just a few neurons, to those that contain over 400 neurons. brainstem and spinal cord. synapses between postganglionic fibers and their effectors. pre-ganglionic neuron. The extrinsic part consists of the nuclei in the brain stem and along the thoracic segments of the spinal cord, as well as their axons. Each trunk consists of ganglia connected by fibers, like a string of beads. a) synapses between postganglionic fibers and their effectors b) both somatic afferent and efferent neurons c) an outer connective tissue capsule around the cell bodies of preganglionic motor neurons d) the cell bodies of motor neurons Autonomic ganglia contain cholinergic synapses that either relay the central (preganglionic) signal directly to the target organ or, in other pathways, integrate central and peripheral inputs to provide control of visceral targets. once a sympathetic preganglionc axon reaches a trunk ganglion it can?B). , List two types of sympathetic ganglia that contain postganglionic cell bodies. After emerging from the vertebral column the spinal nerves split into rami. This ganglion lies between the tensor veli palatini muscle and the mandibular nerve just below the foramen ovale. A) cardiac muscle. Autonomic ganglia, once considered mere relay stations for the transfer of information from the CNS to the periphery, contain circuits capable of integrating and modulating neural. , Autonomic ganglia are motor ganglia, containing the cell bodies of motor neurons. Autonomic ganglia contain _____. The oculomotor, facial, and glossopharyngeal nerves contain fibers that contact autonomic ganglia. general visceral motor system. There are numerous conglomerations of autonomic ganglia on the epicardial surface of the heart, known as ganglionated plexi (GP). 1)Prevertebral ganglia include celiac, superior mesenteric, and inferior mesenteric ganglia. Autonomic ganglia contain A. The incoming synapses are mainly axosomatic and most of the synapsing nerve endings appear to be cholinergic; other endings contain mainly flat and lucent vesicles, whereas axons with dense-cored. Autonomic ganglia contain _____. Sympathetic postganglionic neurons are found in two distinct types of peripheral ganglia: paravertebral and prevertebral. Spinal nerves contain the motor, sensory, and autonomic fibers. Autonomic nervous system functions are regulated by the hypothalamus, which controls autonomic nervous system regions in the ______. Autonomic ganglia. B) true only for the parasympathetic nervous system. Thus the following description applies to mammals in general, except where specifically noted. A) an outer connective tissue capsule around the cell bodies of preganglionic motor neurons B) synapses between postganglionic fibers and their effectors C) the cell bodies of motor neurons D) both somatic afferent and efferent neurons. Autonomic ganglia contain Select one: a. The major differences between the two systems are evident in the responses that each produces. In the upper medulla, the salivatory nuclei contain neurons with axons that project through the facial and glossopharyngeal nerves to ganglia that control salivary glands. Autonomic ganglia contain _____. Autonomic ganglia are the location of synapses: preganglionic fibers synapse onto the neruons in the ganglia. Retrieved 2020-01-31. an outer connective tissue capsule around the cell bodies of preganglionic motor neurons. The. t. , Identify all of the components of the central nervous system. The ANS controls. In Class 20. Create flashcards for FREE and quiz yourself with an interactive flipper. both somatic afferent and efferent neurons. divisions of ANS. A). In sympathetic neurons the most common of these are neuropeptide Y, somatostatin, vasoactive intestinal peptide, and enkephalin 21; in parasympathetic neurons they are vasoactive intestinal peptide and CGRP (Table 11-1). synapses between postganglionic fibers and their effectors . This ganglion lies between the tensor veli palatini muscle and the mandibular nerve just below the foramen ovale. In humans, these ganglia are aggregated into a complex network of microganglia called the inferior hypogastric plexus (Baader and Herrmann, 2003). Autonomic ganglia contain _____. Impaired cholinergic ganglionic synaptic transmission is one. Question: Autonomic ganglia contain __?-an outer connective tissue capsule around the cell bodies of preganglionic motor neurons-the cell bodies of motor neurons-synapses between postganglionic fibers and their effectors-both somatic afferent and efferent neurons Answer: the cell bodies of motor neurons The two divisions of the autonomic nervous system - use preganglionic and postganglionic neurons to innervate skeletal muscle. The ganglia in the head are larger and contain more neurons than those in the body and tail of the pancreas (Sha et al. 14. a posterior root ganglion contain sensory neuron cell bodies. Cremer, H. Find more information about Autonomic Nervous System: Sympathetic nervous system. What is found in autonomic ganglia? The last common neurons that innervate the organs necessary for maintaining homeostasis are found in the autonomic ganglia. a posterior root ganglion contain sensory neuron cell bodies. c) axons of autonomic sensory neurons. Where would you NOT find an autonomic ganglion? in the armpit and in the pubic symphysis. Describe the features of the sympathetic division of the autonomic nervous system. C- preganglionic autonomic motor neuron. 3 and 34. The spinal ganglia or posterior or dorsal root ganglia associated with the spinal nerves contain the unipolar neurons of the sensory nerve fibers that carry signals to the. clogging of preganglionic axon terminals with filaments. The terms “body” and “mass,” being similar to the coccygeal body, suggest that these ganglia are larger in size than most ganglia and are histologically unique, as they contain many non. b. The lumbar ganglia have variable anatomical connections with the lumbar spinal nerves and distribute fibers with the lumbar splanchnic nerves to the inferior mesenteric and hypogastric plexuses and the aortic plexus (Fig. contain autonomic ganglia to house ganglionic neurons. Although alpha3beta4 subunit combination is clearly prevalent in the nAChRs of autonomic ganglia neurons, the ganglia are strikingly different in the ratio of neurons containing each particular nAChR subunit, as found with immunohistochemical methods and from the analysis of the effects of nAChR subunit-specific antibodies on the ACh-induced. These ganglia are key components in the autonomic nervous system, which governs involuntary body functions like heart rate and digestion. mal_comp Plus. 305 Return. Autonomic ganglion neurons also contain a variety of neuropeptides. The esophageal plexus and the cardiac plexus contain the same types of fibers and are both considered thoracic autonomic plexus(es). sympathetic origin is craniosacral, parasympathetic is thoroacolumbar. both. function only during sleep. The autonomic motor neurons in the ganglia send efferent fibers (postganglionic autonomic nerve fibers) to innervate cardiac muscle fibers of the heart. In aging, autonomic inefficiency is often due to ________. The cardiac plexus is a network of autonomic nerves and ganglia situated at the base of the heart. The other is connected to the central nervous system via the brain or spinal cord. See image 3 Study with Quizlet and memorize flashcards containing terms like The ANS stimulates smooth muscles, skeletal muscles and glands, whereas the somatic nervous system innervates skeletal muscles only. Operates largely outside our awareness. Autonomic ganglia contain. Three of the cranial nerves also contain autonomic fibers, and a fourth is almost purely a component of the autonomic system. Autonomic ganglia contain the cell bodies of autonomic nerves. Autonomic ganglia, which contain the cell bodies of the autonomic nervous system. What are autonomic ganglia? Autonomic ganglia are a type of ganglia in which there is a group of neurons that will join the nerves that come from the central nervous system with the nerves that come from the organs in the periphery, the latter will be. A. There is the soma, (main cell body), the dendrites, ( branches extending in all directions), the axon, (an elongation of the soma) and the axon terminals. The definition of autonomic tone is: a) the communication between the autonomic nervous system and the somatic nervous system. All preganglionic neurons use acetylcholine as transmitter in the ganglia. “rest and digest”) Ganglia close to target organ → long preganglionic fibers, short postganglionic fibers Preganglionic neurons Located in brainstem (nuclei of cranial nerves II, VII, IX, X. Each ganglion receives a white ramus from the appropriate ventral. synapses between postganglionic fibers and their effectors c. The cell bodies of the postganglionic neurons are in autonomic ganglia located. both somatic afferent and efferent neurons b. Click the card to flip 👆. It operates independently of voluntary control, although certain events, such as stress. . synapses between postganglionic fibers and their effectors. B. T/F: The adrenal medulla is considered by some to be a "misplaced" sympathetic ganglion since embryologically, they arise from the same tissue. E- ganglionic autonomic motor neuron. Study with Quizlet and memorize flashcards containing terms like Which autonomic fiber releases norepinephrine as its neurotransmitter?, Preparing the body for the "fight-or-flight" response is the role of the, The parasympathetic nervous system is characterized by peripheral ganglia near the and more. Autonomic ganglia contain _____. - contain autonomic ganglia to house ganglionic neurons. The oculomotor, facial, and glossopharyngeal nerves contain fibers that contact autonomic ganglia. In most ganglia there are subsets of neurons with. This article will explain the anatomy and function of the thoracic. synapses between postganglionic fibers and their effectors. Otic Ganglion - Parasympathetic Roots. The Autonomic Nervous System . The autonomic motor neurons in the ganglia send efferent fibers (postganglionic autonomic nerve fibers) to innervate cardiac muscle fibers of the heart. Sensory ganglia contain unipolar sensory neurons and are found on the dorsal root of all spinal nerves as well as associated with many of the cranial nerves. The autonomic nervous system. collections of nerve cells called autonomic ganglia. Learn about the structures and functions of ganglia and nerves in the peripheral nervous system (PNS) and the central nervous system (CNS). Petrose ganglia contain VSN that innervate structures of the respiratory system and convey taste information from the posterior third of the tongue. Involuntary Somatic Spinal Autonomic Cranial . - regulates heart beat. Each nerve fiber sits in a loose connective tissue called the endoneurium. cell body of this autonomic neuron lies within the CNS. . false. Will either excite or inhibit cells of glands, smooth or cardiac muscle. In the thorax, the extra-cardiac but intrathoracic ganglia such as. Synapses in autonomic ganglia represent the final output of various CNS structures that regulate the function of the periphery. , and. Autonomic ganglia contain the cell bodie of motor neurons. , List the names and numbers of the four cranial nerves that the parasympathetic division of the ANS arises from. Among vertebrates there are three major groups of ganglia: 14. The SNS and PSNS interact at each hierarchy level, including the intrinsic cardiac. Ganglia are 20,000 to 30,000 afferent and efferent nerve cell bodies that run along on either side of the spinal cord. Ganglia are 20,000 to 30,000 afferent and efferent nerve cell bodies that run along on either side of the spinal cord. b) Autonomic nervous system motor (output) pathways typically contain two motor neurons in series. For example, the cells of sensory ganglia are usually unipolar or pseudounipolar with centrally placed nucleus. A particular autonomic. an outer connective tissue capsule around the cell bodies of. 2G: Sympathetic Nervous System. , List the names and numbers of the four cranial nerves that the parasympathetic division of the ANS arises from. The autonomic ganglia and plexuses are a collection of ganglia where autonomic preganglionic neurons arising from the CNS synapse with postganglionic neurons outside the CNS, i. C) true for both the parasympathetic and sympathetic nervous systems. the cell bodies of motor neurons. Autonomic ganglia contain many ganglionic neurons that innervate visceral effectors Postganglionic fibers—axons of ganglionic neurons. A ganglia is merely a collection of neuron cell bodies in the peripheral nervous system. Autonomic ganglia contain _____. Select one: a. Cranial nerve ganglia are made up of cranial nerve neuron bodies. Parasympathetic preganglionic neurons, which have cell bodies in the brainstem and spinal cord, are the source of all parasympathetic outflow. Which nervous system division works antagonistically to the sympathetic nervous system? adrenergic. All postganglionic fibers release Ach at neuroeffector junctions. Study with Quizlet and memorize flashcards containing terms like Pre vertebral ganglia are located anterior to the _____ _____ on the anterolateral surface of the _____ . Preganglionic neurons have their cell bodies in the cord or brain stem, and their axons terminate in ganglia. Figure 14. c) the constant slight contraction seen in skeletal muscles. synapses between postganglionic fibers and their effectors. 2. The autonomic nervous system plays a central role in the pathogenesis of multiple cardiac arrhythmias, including atrial fibrillation and ventricular tachycardia. lateral gray horns of the spinal cord. The dorsal root ganglia contain cell bodies of motor neurons. 3 In the cervical region, the neural. Ganglia can be categorized, for the most part, as either sensory ganglia or autonomic ganglia, referring to their primary functions. both somatic afferent and efferent neurons. Create flashcards for FREE and quiz yourself with an interactive flipper. Within pelvic plexuses, autonomic ganglia contain both sympathetic and parasympathetic postganglionic neurons, (predominantly parasympathetic). Autonomic ganglia contain sensory nerve cells of both the sympathetic and parasympathetic nervous. The autonomic nervous system is comprised of (clustered) nerve cells, (neurons), that have a characteristic tree-like structure. What are 3 types of neurons? Functional types of neurons: 1. A) an outer connective tissue capsule around the cell bodies of preganglionic motor neurons. Autonomic ganglia contain _____. Autonomic ganglia contain A. C. Other articles where autonomic ganglion is discussed: human nervous system: The autonomic nervous system:. The nature of these ganglionic neurons i. In the upper medulla, the salivatory nuclei contain neurons with axons that project through the facial and glossopharyngeal nerves to ganglia that control salivary glands. Anatomy and Physiology questions and answers. Are located in. e. -activates β2 adrenergic receptors. 34)Autonomic ganglia are motor ganglia, containing the cell bodies of motor neurons. , What does a posterior (dorsal) root ganglion contain?Autonomic ganglion. The cell bodies of the preganglionic neurons are in the brainstem or spinal cord of the central nervous system (CNS). the cell bodies and dendrites of motor (efferent) neurons. False. Abdominal The abdominal aortic plexus is formed by branches derived, on either side, from the celiac plexus and ganglia, and receives filaments from some of the lumbar ganglia. The sympathetic and parasympathetic divisions of the ANS have the same effect on most body organ systems. Autonomic ganglia contain: -an outer connective tissue capsule around the cell bodies of preganglionic motor neurons. the cell bodies of motor neurons D. The motor fibers, both somatic and autonomic, emerge as the ventral nerve root. E) afferent neurons. , orthostatic hypotension. The vesicles release neurotransmitter molecules that diffuse. a) Structurally, the autonomic nervous system consists of two main components: a sensory (input) component and a motor (output) component. the cell bodies of motor neurons. the cell bodies of motor neurons. The paravertebral ganglia are interconnected autonomic ganglia that lie close to the spinal nerves and the vertebrae, from the lower cervical/upper thoracic level to the sacral level of the spinal cord. It functions without conscious control. As autonomic motor neurons leave the spinal cord, they synapse with another neuron prior to synapsing with the target organ. The oculomotor fibers initiate pupillary constriction, whereas the facial and glossopharyngeal fibers both initiate. Multiple select question. Damage to the ________ nerve would inhibit saliva production. (1) The celiac ganglion . vagus nerve. Autonomic ganglia: Contain hundreds-thousands of ganglionic neurons. There are 31 spinal nerves, named for the level of the spinal cord at which each one emerges (Figure (PageIndex{1})). bowel movements). Parasympathetic Nervous System. Sensory ganglia contain unipolar sensory neurons and are found on the dorsal root of all spinal nerves as well as associated with many of the cranial nerves. Expert Answer. Disease processes that affect the sensory ganglia often also damage the autonomic ganglia, so patients with sensory ganglionopathies may also have dysautonomia (e. read more or spinal cord. motor; the cell bodies of motor neurons. In the autonomic nervous system, fibers from the ganglion to the effector organ are called postganglionic fibers. an outer connective tissue capsule around the cell bodies of preganglionic motor neurons. synapses between postganglionic fibers. Renal, ovarian, and, in some species including human, the accessory lumbar sympathetic ganglia are also part of the. In addition, both the spinal cord and brainstem give rise to motor output to striated muscles and to the autonomic ganglia (ANS, autonomic nervous system; synonymous with visceral motor system). B. The dorsal root ganglia (DRG), cranial nerve ganglia, and autonomic ganglia (AG) are the three types of PNS ganglia while the basal ganglia in the brain and retinal ganglion in the retina are the two types of CNS ganglia. True b. The "resting and digesting" division of the autonomic nervous system is the ____. Autonomic ganglia are an important site of neural integration and regulation of autonomic reflexes. 16-1 Autonomic Nervous System •Visceral Motor Neurons •Autonomic ganglia •Contain many ganglionic neurons •Ganglionic neurons innervate visceral effectors •Such as cardiac muscle, smooth muscle, glands, and adipose tissue •Postganglionic fibers •Axons of ganglionic neuronsthe dorsal root ganglia mainly contain A axons of motor neurons B synapses C axons of sensory neurons D cell bodies of motor neurons E cell bodies of sensory neruons. The somatic nervous system causes contraction of skeletal muscles. Impaired cholinergic ganglionic synaptic transmission is one important cause of autonomic failure. D. A. Anatomy and Physiology questions and answers. On the model's right side, you can see the sympathetic chain ganglia (there are sympathetic chain ganglia on both sides of the body, but they are only modeled on the right side for this particular model). Along with the Nissl substance some of the cells also contain golden brown lipofuscin pigment in their. Each organ system. They are part of the peripheral nervous system and carry nerve signals to and from the central nervous system. A) Sympathetic B) Parasympathetic and more. Neural processing occurs at several levels, figure 1. Function. 4 14. D. G- proteins. Disease processes that affect the sensory ganglia often also damage the autonomic ganglia, so patients with sensory ganglionopathies may also have dysautonomia (e. In sympathetic neurons the most common of these are neuropeptide Y, somatostatin, vasoactive intestinal peptide, and enkephalin 21; in parasympathetic neurons they are vasoactive intestinal peptide and CGRP (Table 11-1). Ganglia are of two types, sensory or autonomic. Parasympathetic ganglia are located near or within the effector organs. B) smooth muscle. It is connected by nerve fibers to the. Cardiac plexus. C) the cell bodies of. Autonomic ganglia contain the cell bodies of autonomic nerves. Study with Quizlet and memorize flashcards containing terms like Which of the following is a way in which the somatic and autonomic nervous systems are similar? -Both systems have ganglia in their motor pathways. a. synapses between postganglionic fibers and their effectors. ; cholinergic: Pertaining to, activated by, producing, or having the same function as acetylcholine. dilation of the blood vessels serving the skin and digestive viscera. Autonomic ganglia contain _____. A) smooth muscle. This Osmosis High-Yield Note provides an overview of Autonomic Nervous System essentials. What is the term for a reflex that does not include a. 4). In the rabbit pancreas, the larger ganglia (≥6 neurons) often appear to be encapsulated and connect to larger nerve trunks, while the smaller ganglia are similar to grape clusters; single pancreatic neurons are also. Page ID. d) a substance that prevents a receptor from receiving a hormone. autonomic ganglia: [ gang´gle-on ] (pl. another name for the ANS is the. . Ganglia embedded in network of autonomic nerves o Preganglionic fibers from lumbar segments Form splanchnic nerves End at inferior mesenteric ganglion 16-2 The Sympathetic Division1. Autonomic ganglia. C. 14. In the autonomic nervous system there are two neurons in the pathway from the spinal cord to the effector organ. both somatic afferent and efferent neurons b. a. The ganglia are surrounded. Parasympathetic ganglia tend to lie close to or within the organs or tissues that their neurons innervate, whereas sympathetic ganglia are located at more distant sites from. It operates independently of voluntary control, although certain events, such as. synapses between postganglionic fibers. the cell bodies of motor neurons D. This chapter describes the properties of preganglionic neurons of the different parasympathetic. both somatic afferent and efferent neurons d. For instance, sensory ganglia are involved in sensing the stimuli whereas autonomic ganglia are involved in controlling autonomic functions. In addition to the ganglion of the peripheral nervous system, there are also parts of the brain that contains a cluster of interconnected nuceli called the basal ganglia. synapses between postganglionic fibers and their effectors. Study with Quizlet and memorize flashcards containing terms like List the names of the two motor neurons of the autonomic nervous system. A deficiency of α3, β2 or β4 subunits leads to multiorgan autonomic dysfunction in experimental animals. ; adrenergic: Containing or releasing adrenaline. On the other hand, PSNS. g. ; postsynaptic neuron: The nerve cell that bears receptors for neurotransmitters released into the synaptic cleft by the presynaptic neuron. Phototransduction is the process in which. A) the cell bodies of motor neurons D) first thoracic B) both somatic afferent and efferent neurons C) an outer connective tissue capsule around the cell bodies of preganglionic motor neurons D) synapses between postganglionic fibers and their effectors. The third nerve emerges from the third or fourth ganglion joins the superior hypogastric plexuses. Autonomic ganglia contain autonomic neuron bodies. a. the cell bodies of postganglionic motor fibers The site(s) of origin of the preganglionic fibers of the parasympathetic nervous system is (are) the ____. It can be both pro- and/or anti-arrhythmic [1]. , 2000). In the somatic nervous system, this includes dorsal root ganglia and trigeminal ganglia among a few others. T/F: The sympathetic division innervates more organs than the parasympathetic division. all. B) gray rami communicantes. The ciliary ganglion is one of four parasympathetic ganglia in the head.