HUMAN PHYSIOLOGY CONNECT ACCESS CARD
15th Edition
ISBN: 9781260865462
Author: Fox
Publisher: MCG CUSTOM
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Question
Chapter 7, Problem 10RA
Summary Introduction
To determine:
The action of the drugs that inhibit acetylcholinesterase.
Introduction:
Acetylcholine (ACh) is a neurotransmitter released at post synaptic clefts that helps in the conduction of a nerve impulse. Acetylcholinesterase inhibits the activity of this neurotransmitter by breaking it down into acetyl and choline, which re-enter the presynaptic cleft to make more acetylcholine. This restores the nerve conduction to the original state while passing on the impulse. However, in skeletal muscle disorders like Myasthenia gravis, there is a need to increase the amount of acetylcholine, which can be done by inhibiting the action of acetylcholine esterase.
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Select ALL statements that are TRUE regarding a drug that would inactivate the enzyme acetylcholinesterase
A. Prevent acetylcholine from being loaded into synaptic vesicles
B. Prolong the effects of acetylcholine in the synapse
C. Terminate the effects of acetylcholine in the synapse
D. Speed up the synthesis of acetylcholine
E. Reduce the reuptake of choline back into the axon terminal
Nicotinic receptors bind
A. acetylcholine and allow chloride ions to exit the cell.
B. acetylcholine and allow sodium ions to enter the cell.
C. muscarine and increase the contractility of intestinal muscle.
D. norepinephrine and can either stimulate or inhibit the cell.
E. norepinephrine and allow potassium entry, thereby exciting the cell.
Which of the following is accurate about a beta receptor? a. It binds acetylcholine. b. Its effects are excitatory (stimulatory) only. c. It causes general vasoconstriction. d. It increases heart rate.
Chapter 7 Solutions
HUMAN PHYSIOLOGY CONNECT ACCESS CARD
Ch. 7 - Draw a neuron, label its parts, and describe the...Ch. 7 - Distinguish between sensory neurons, motor...Ch. 7 - Describe the structure of the neurilemma, and...Ch. 7 - Explain how myelin sheaths are formed in the CNS....Ch. 7 - Explain what is meant by the blood-brain barrier....Ch. 7 - Define the terms depolarization and...Ch. 7 - Prob. 4bCPCh. 7 - Describe how gating of Na+andK+ in the axon...Ch. 7 - Prob. 5aCPCh. 7 - Prob. 5bCP
Ch. 7 - Prob. 6aCPCh. 7 - Describe the location of neurotransmitters within...Ch. 7 - Describe the sequence of events by which action...Ch. 7 - Explain how chemically regulated channels differ...Ch. 7 - Prob. 8CPCh. 7 - Prob. 9aCPCh. 7 - Prob. 9bCPCh. 7 - Prob. 10CPCh. 7 - Prob. 11CPCh. 7 - Prob. 12aCPCh. 7 - Prob. 12bCPCh. 7 - Prob. 13aCPCh. 7 - Prob. 13bCPCh. 7 - Prob. 14aCPCh. 7 - Describe the mechanism of action of glycine and...Ch. 7 - Give examples of endogenous opioid polypeptides,...Ch. 7 - Prob. 15bCPCh. 7 - Prob. 16CPCh. 7 - Prob. 17aCPCh. 7 - Prob. 17bCPCh. 7 - Prob. 17cCPCh. 7 - Prob. 1RACh. 7 - Prob. 2RACh. 7 - Prob. 3RACh. 7 - Prob. 4RACh. 7 - Repolarization of an axon during an action...Ch. 7 - As the strength of a depolarizing stimulus to an...Ch. 7 - Prob. 7RACh. 7 - Which of these is not a characteristic of synaptic...Ch. 7 - Prob. 9RACh. 7 - Prob. 10RACh. 7 - Prob. 11RACh. 7 - Prob. 12RACh. 7 - Prob. 13RACh. 7 - Prob. 14RACh. 7 - Prob. 15RACh. 7 - Prob. 16RACh. 7 - Prob. 17RACh. 7 - Which of these may be produced by the action of...Ch. 7 - Prob. 19RACh. 7 - In a step-by-step manner, explain how the...Ch. 7 - Prob. 21RACh. 7 - Prob. 22RACh. 7 - Prob. 23RACh. 7 - Prob. 24RACh. 7 - Once an EPSP is produced in a dendrite, how does...Ch. 7 - Prob. 26RACh. 7 - List the endogenous opioids in the brain and...Ch. 7 - Explain what is meant by long-term potentiation...Ch. 7 - Prob. 29RACh. 7 - Prob. 30RACh. 7 - Prob. 31RACh. 7 - Prob. 32RACh. 7 - Prob. 33RACh. 7 - Explain the nature of the endocannabinoids....Ch. 7 - Prob. 35RACh. 7 - Prob. 36RACh. 7 - Prob. 37RACh. 7 - Prob. 38RACh. 7 - Prob. 39RACh. 7 - Use the figure below (from figure 7.34) to answer...
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