ANATOMY AND PHYSIOLOGY
17th Edition
ISBN: 9781630180928
Author: OpenStax
Publisher: OPENSTAX C
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Textbook Question
Chapter 15, Problem 8RQ
Which type of fiber could be considered the longest?
- preganglionic parasympathetic
- preganglionic sympathetic
- postganglionic parasympathetic
- postganglionic sympathetic
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The cell bodies of sympathetic preganglionic rHeurons are located in
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the ventral horn
small neuronal clusters situated outside of target organs such as the intestines and kidne
the intermediolateral cell column of the spinal cord
Sympathetic and parasympathetic preganglionic fibers release the neurotransmitter:
In the sympathetic division of the autonomic system:
preganglionic neurons originate in the thoracolumbar segments of the cord
the preganglionic neurons are unmyelinated
the preganglionic neurons are long
the neurotransmitter released by the preganglionic neurons is norepinephrine
Chapter 15 Solutions
ANATOMY AND PHYSIOLOGY
Ch. 15 - Watch this video...Ch. 15 - Watch this video...Ch. 15 - Read this article...Ch. 15 - Watch this video...Ch. 15 - Watch this video...Ch. 15 - Watch this video...Ch. 15 - Which of these physiological changes would not be...Ch. 15 - Which type of fiber could be considered the...Ch. 15 - Which signaling molecule is most likely...Ch. 15 - Which of these cranial nerves contains...
Ch. 15 - Which of the following is not a target of a...Ch. 15 - Which of the following represents a sensory input...Ch. 15 - What is the term for a reflex that does not...Ch. 15 - What neurotransmitter will result in constriction...Ch. 15 - What gland produces a secretion that causes...Ch. 15 - Which of the following is an incorrect pairing?...Ch. 15 - Which of these locations in the forebrain is the...Ch. 15 - Which nerve projects to the hypothalamus to...Ch. 15 - What region of the limbic lobe is responsible for...Ch. 15 - What is another name for the preganglionic...Ch. 15 - What central fiber tract connects forebrain and...Ch. 15 - A drag that affects both divisions of the...Ch. 15 - A drug is called an agonist if it ________. blocks...Ch. 15 - Which type of drug would be an antidote to...Ch. 15 - Which kind of ding would have anti-anxiety...Ch. 15 - Which type of drug could be used to treat asthma...Ch. 15 - In the context of a lioness hunting on the...Ch. 15 - A target effector, such as the heart, receives...Ch. 15 - Damage to internal organs will present as pain...Ch. 15 - Medical practice is paying more attention to the...Ch. 15 - Horners syndrome is a condition that presents with...Ch. 15 - The cardiovascular center is responsible for...Ch. 15 - Why does smoking increase the risk of heart...Ch. 15 - Why might topical, cosmetic application of...
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- In the sympathetic division of the autonomic nervous system: Select one: The ratio between the number of postganglionic and preganglionic neurons is small. A single preganglionic neuron usually synapses with a single postganglionic neuron. An important functional characteristic is convergence of the preganglionic fibers. Preganglionic fibers are usually much longer than the postganglionic fibers. Activity of the neurons tends to have a more generalized and widespread effect on the body.arrow_forwardWhich type of fiber could be considered the longest?a. preganglionic parasympatheticb. preganglionic sympatheticc. postganglionic parasympatheticd. postganglionic sympatheticarrow_forwardThe ANS is subdivided into sympathetic and parasympathetic divisions. Review the differences between these two divisions by filling in the table below: Characteristic Sympathetic or Parasympathetic? Calms you down — "rest and digest" ["", ""] Pumps you up — "fight or flight" ["", ""] Preganglionic neuron long, postganglionic neuron short ["", ""] Preganglionic neuron short, postganglionic neuron long ["", ""] Arises from cranial or sacral spinal nerves ["", ""] Arises from spinal nerves T1-L2 ["", ""] Synapses near the spinal cord ["", ""] Synapses near the target organ ["", ""] Increases heart and respiratory rate ["", ""] Stimulates…arrow_forward
- Discuss the difference between pre and postganglionic neurons of the sympathetic systemarrow_forwardAUTONOMIC NERVOUS SYSTEM STRUCTURE FUNCTION(S)/CHARACTERISTIC(S) SYMPATHETIC DIVISION 1 Preganglionic neuron 2 Postganglionic neuron 3 Gray horns of the spinal cord 4 Dorsal Roots of the spinal cord 5 Ventral Roots of the spinal cord 6 Dorsal Rami 7 Ventral Rami 8 White ramus communicans 9 Gray ramus communicans 10 Sympathetic trunk ganglion (Paravertebral ganglia) 11 Superior cervical ganglion 12 Middle cervical ganglion 13 Inferior cervical ganglion 14 14a 14b 14c Prevertebral ganglia Celiac ganglion Superior mesenteric ganglion Inferior mesenteric ganglion PARASYMPATHETIC DIVISION 15 Preganglionic neuron 16 Postganglionic neuron 17 CN III Oculomotor nerve 18 CN VII Facial nerve…arrow_forwardWhich of these characterize the parasympathetic division of the autonomic nervous system? Preganglionic fibers are myelinated; postganglionic fibers are not. Preganglionic fibers arise from the thoracic and lumbar regions of the spinal cord. Terminal ganglia are located close to effector organs. Parasympathetic postganglionic fibers secrete acetylcholine.arrow_forward
- Define sympathetic divisionarrow_forwardOnce a sympathetic preganglionic axon reaches a paravertebral ganglion, it can: ascend or descend the sympathetic trunk, to synapse in another paravertebral ganglion. True O Falsearrow_forwardThe cell bodies of autonomic postganglionic neurons are found in ANS ganglia. The cell bodies of another class of neuron are also found in ganglia (but not ANS ganglia). What are these other ganglia called? Determine the structural and functional classification of the neurons found in these other ganglia.arrow_forward
- Classify the following characteristics to demonstrate your knowledge of differences between the sympathetic and parasympathetic divisions of the autonomic nervous system. Sympathetic Nervous System Most ganglia lie close to the spinal cord and form two chains of ganglia-one on each side of the spinal cord Increases intestinal motility and stimulates intestinal secretion Postganglionic axons are generally short Preganglionic axons are generally short Postganglionic axons release NE that binds to adrenergic receptors located on the effectors Decreases heart rate, contractility, and conduction velocity Ganglia lie within, or very close to, innervated organs Decreases intestinal motility and inhibits intestinal secretion Long preganglionic axons release ACh that binds to nicotinic receptors located within the ganglia Neurons leave the CNS from the thoracic and lumbar regions of the spinal cord Parasympathetic Nervous System Generalized activation is called the fight-or-flight response…arrow_forwardCell bodies of the sympathetic preganglionic neurons are part of ...arrow_forwardDescribe the lengths of the preganglionic andpostganglionic neurons of the sympathetic divisionarrow_forward
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