Human Anatomy - With DVD and Master. A & P Access
8th Edition
ISBN: 9780133981254
Author: Martini
Publisher: PEARSON
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Chapter 17, Problem 18RFT
Summary Introduction
Introduction:
Preganglionic autonomic fibers are the neural components of the autonomic nervous system (ANS), which originate from the visceral motor neuron of the central nervous system (CNS) and synapse with the neurons present in the autonomic ganglion. These fibers are primarily responsible for the sympathetic activation and carry out this process through the help of certain excitatory neurotransmitters.
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Chapter 17 Solutions
Human Anatomy - With DVD and Master. A & P Access
Ch. 17 - Match each numbered item with the most closely...Ch. 17 - Prob. 2RFTCh. 17 - Prob. 3RFTCh. 17 - Prob. 4RFTCh. 17 - Prob. 5RFTCh. 17 - Prob. 6RFTCh. 17 - Match each numbered item with the most closely...Ch. 17 - Prob. 8RFTCh. 17 - Prob. 9RFTCh. 17 - Prob. 10RFT
Ch. 17 - Visceral motor neurons in the CNS (a) are...Ch. 17 - Prob. 12RFTCh. 17 - Prob. 13RFTCh. 17 - Prob. 14RFTCh. 17 - The neurotransmitter at all synapses and...Ch. 17 - Prob. 16RFTCh. 17 - 17. Sympathetic preganglionic fibers are...Ch. 17 - Prob. 18RFTCh. 17 - Postganglionic fibers of autonomic neurons are...Ch. 17 - The white ramus communicans a. carries the...Ch. 17 - Prob. 1RCCh. 17 - Prob. 2RCCh. 17 - Prob. 3RCCh. 17 - Prob. 4RCCh. 17 - Prob. 5RCCh. 17 - Prob. 6RCCh. 17 - 7. How do sympathetic chain ganglia differ from...Ch. 17 - 8. Compare the general effects of the sympathetic...Ch. 17 - Prob. 9RCCh. 17 - Prob. 1CTCh. 17 - Prob. 2CTCh. 17 - Prob. 3CT
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- What types of axons (preganglionic or postganglionic,myelinated or unmyelinated) are found in the white andgray rami communicantes?arrow_forwardFunctions of basal ganglia include all the following, except :-a- planning and programming of voluntary movementsb- initiation of reflex movement.c- postural regulationd- executing learned pattern of movement.arrow_forwardWatch this animation (http://openstaxcollege.org/l/CSFflow) that shows the flow of CSF through the brain and spinal cord, and how it originates from the ventricles and then spreads into the space within the meninges, where the fluids then move into the venous sinuses to return to the cardiovascular circulation. What are the structures that produce CSF and where are they found? How are the structures indicated in this animation?arrow_forward
- Horners syndrome is a condition that presents with changes in one eye, such as pupillary constriction and dropping of eyelids, as well as decreased sweating in the face. Why could a tumor in the thoracic cavity have an effect on these autonomic functions?arrow_forwardWhat is a unique feature about the basal ganglia's anatomical organization? a. Few inhibitory circuits among many excitatory loops b. A balance of action-promoting and action-inhibition circuits c. Few excitatory circuits among many inhibitory loops d. Basal ganglia regions send motor output straight to the brain stem to control movements e. A balance of LTP and LTD circuitsarrow_forwardWhy is it difficult to treat conditions such as Parkinson’s with additional neurotransmitters? What kind of side effects are possible?arrow_forward
- Which number represents postganglionic fibers?arrow_forwardPeyton felt strange when she awoke one morning. She could not hold a pen in her right hand when trying to write an entry in her diary, and her muscles were noticeably weaker on the right side of her body. Additionally, her husband noticed that she was slurring her speech, so he took her to the emergency room. What does the ER physician suspect has occurred? Where in the brain might the physician suspect that abnormal activity or perhaps a lesion is located, and why?arrow_forwardDescribe the structural and functional differences betweenthe white and gray rami communicantes. Do thesestructures contain myelinated or unmyelinated axons?Which carry preganglionic axons, and which carrypostganglionic axons?arrow_forward
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