Human Physiology
15th Edition
ISBN: 9781259864629
Author: Fox, Stuart Ira
Publisher: Mcgraw-hill Education,
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Question
Chapter 7, Problem 8CP
Summary Introduction
To review:
Opening up of ligand gated channels with the help of nicotinic ACh (acetylcholine) receptors as a reference.
Introduction:
A neurotransmitter molecule performs the function of a ligand that fuses with its respective specific and unique receptor protein and for those ion channels that are ligand gated. This protein acts as an ion channel thus performing twin functions. For instance, there is a family of ligand gated channels which comprises five polypeptide chains around the ion channels, namely nicotinic ACh receptors.
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Explain how ligand-gated channels are opened, using nicotinic ACh receptors as an example.
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Chapter 7 Solutions
Human Physiology
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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- Classify the following neurotransmitters as excitatory or inhibitory: Acetylcholine Serotonin GABA Norepinephrine Glutamate Dopaminearrow_forwardThe Structure of the acetylcholine receptor is shown below: D. Briefly indicate what the role of the acetylcholine receptor is in an action potential.arrow_forwardGive two mechanisms by which neurotransmitters exert their effects.arrow_forward
- The Structure of the acetylcholine receptor is shown below: C. What type of channel is the acetylcholine receptor and what activates it?arrow_forwardDescribe how an action potential is generated across the axon. Make sure to explain the role of Na+ and K+ channels and pump in this process.arrow_forwardGive some examples of howdrugs can modulate the action of neurotransmitters.arrow_forward
- Give an example of a drug that acts as an agonist for acetylcholine receptors and one that acts as an antagonist for these receptors.arrow_forwardExplain how inhibition can be produced by (a) muscarinic ACh receptors in the heart; and (b) GABAreceptors in neurons of the CNS.arrow_forwardName 3 ways in which ion channels are controlled aka "gated."arrow_forward
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