Anatomy and Physiology
9th Edition
ISBN: 9781260256000
Author: SALADIN
Publisher: MCG
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Question
Chapter 15, Problem 3TYC
Summary Introduction
Summary:
Cardiac nerves that innervate the heart tend to influence the heartbeat rate but not to control it. The heart can function without cardiac nerves but tentatively is very slow.
Characters:
- Heart
- Cardiac nerves
- Heartbeat
- Vagus nerve
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Chapter 15 Solutions
Anatomy and Physiology
Ch. 15.1 - Prob. 1BYGOCh. 15.1 - The fundamental function and effectors of the...Ch. 15.1 - Why this system is called autonomic; how it...Ch. 15.1 - Prob. 3AYLOCh. 15.1 - Why it cannot be said that at any given moment,...Ch. 15.1 - Basic anatomical components of the ANSCh. 15.1 - How autonomic efferent pathways differ from...Ch. 15.2 - Explain why the sympathetic division is also...Ch. 15.2 - Prob. 4BYGOCh. 15.2 - Prob. 1AYLO
Ch. 15.2 - Anatomy of the sympathetic chain; the number of...Ch. 15.2 - Prob. 3AYLOCh. 15.2 - Differences between the spinal nerve route,...Ch. 15.2 - Prob. 5AYLOCh. 15.2 - Prob. 6AYLOCh. 15.2 - The degree and significance of neural divergence...Ch. 15.2 - Why the adrenal medulla can be considered part of...Ch. 15.2 - Names and numbers of the cranial and spinal nerves...Ch. 15.2 - Prob. 10AYLOCh. 15.2 - Prob. 11AYLOCh. 15.2 - The location and functions of the enteric nervous...Ch. 15.3 - Prob. 10BYGOCh. 15.3 - Prob. 11BYGOCh. 15.3 - Prob. 1AYLOCh. 15.3 - Prob. 2AYLOCh. 15.3 - Prob. 3AYLOCh. 15.3 - Prob. 4AYLOCh. 15.3 - Prob. 5AYLOCh. 15.3 - Prob. 6AYLOCh. 15.3 - Autonomic control of certain organs by dual...Ch. 15.3 - Prob. 8AYLOCh. 15.4 - Examples of the influence of the cerebral cortex,...Ch. 15 - Prob. 1TYRCh. 15 - Muscarinic receptors bind a. epinephrine. b....Ch. 15 - All of the following cranial nerves except the...Ch. 15 - Which of the following cranial nerves carries...Ch. 15 - Prob. 5TYRCh. 15 - Epinephrine is secreted by a. sympathetic...Ch. 15 - Prob. 7TYRCh. 15 - The gray communicating ramus contains a. visceral...Ch. 15 - Prob. 9TYRCh. 15 - Which of these does not result from sympathetic...Ch. 15 - Certain nerve fibers are called _______ fibers...Ch. 15 - Prob. 12TYRCh. 15 - Prob. 13TYRCh. 15 - Most parasympathetic preganglionic fibers arc...Ch. 15 - Prob. 15TYRCh. 15 - Prob. 16TYRCh. 15 - Prob. 17TYRCh. 15 - Prob. 18TYRCh. 15 - Prob. 19TYRCh. 15 - Prob. 20TYRCh. 15 - Baro -Ch. 15 - Lyto-Ch. 15 - Prob. 3BYMVCh. 15 - Prob. 4BYMVCh. 15 - Prob. 5BYMVCh. 15 - Prob. 6BYMVCh. 15 - reno-Ch. 15 - Prob. 8BYMVCh. 15 - Prob. 9BYMVCh. 15 - Prob. 10BYMVCh. 15 - Prob. 1WWTSCh. 15 - The parasympathetic nervous system controls...Ch. 15 - Voluntary control of the ANS is not possible.Ch. 15 - Prob. 4WWTSCh. 15 - Prob. 5WWTSCh. 15 - Prob. 6WWTSCh. 15 - Prob. 7WWTSCh. 15 - Prob. 8WWTSCh. 15 - Prob. 9WWTSCh. 15 - The two divisions of the ANS have cooperative...Ch. 15 - You are dicing raw onions while preparing dinner,...Ch. 15 - Prob. 2TYCCh. 15 - Prob. 3TYCCh. 15 - What would be the advantage to a wolf in having...Ch. 15 - Pediatric literature has reported many cases of...
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- Describe the neurotransmitters. Give examples of how they might occur in the body.arrow_forwardAntiseizure drugs stop seizures from happening by inhibiting electrical impulses. What is the importance of sodium and calcium channels on a neuron and reasons why actions potentials do not occur when these channels are inhibited.arrow_forwardBeta blockers are drugs that interfere with stimulation of organs by nerves of the sympathetic system. Would these drugs be useful in treating excessively high blood pressure or excessively low blood pressure?arrow_forward
- Biochemistry in compliance with established rules versus resisting established rules. Compliance involves release of dopamine Resisting established rules involves release of dopamine Resisting established rules involves activating the nucleus accumbens Compliance activate the sympathetic autonomic nervous systemarrow_forwardAn intravenous injection of potassium can cause death within a minute. From what you have learned about the resting membrane potential and action potential in chapter 7, how do you think it interferes with cellular function to cause death so fast?arrow_forwardDescribe the actions of THREE different neurotransmitters..arrow_forward
- Explain how a nervous impulse is transmitted along the axon of a nerve cell, including the transmission across the junction between one neurone and the next. (Chemical impulse not electrical)arrow_forwardMatch the stages of action potential with the appropriate image or description. 1. Resting membrane potential 2. Threshold 3. Depolarization 4. Repolarization 5. Hyperpolarization 6. Refractory period The potential difference that must be met in order for an action potential to be generated When the potential drops below resting level When the potential starts to decrease again after it has reached a maximum Occurs at -77 mV When the membrane is resetting and an action potential cannot yet be produced again When the sodium channels are open Occurs at -55 mVarrow_forwardCaffeine and nicotine have excitatory effects because they: reduce the threshold for excitation increase the threshold for excitation open potassium ion leakage channels open chemically-gated chloride ion channels close chemically-gated calcium ion channels ( explain deeply with step by step type the answer).arrow_forward
- ATPase is an enzyme that can hydrolyse ATP and release the potential energy stored in the phosphate bond. How would a metabolic inhibitor that blocks ATPase function affect the resting potential of nerve cells?arrow_forwardHow does the sympathetic nervous system regulate heart rate? (Briefly describe) Parasympathetic nervous system? Hormones? Ion imbalances?arrow_forwardA patient takes a stimulant that produces euphoria, as well as an increase in heart rate and blood pressure and it treats narcolepsy. To exert its effect, the drug must be taken up into nerve terminals, where it stimulates the release of norepinephrine and dopamine from their vascular storage sites.arrow_forward
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