Campbell Biology: Concepts.. (Custom Package)
8th Edition
ISBN: 9781323042649
Author: Central Texas
Publisher: PEARSON
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Textbook Question
Chapter 28, Problem 6TYK
Anesthetics block pain by blocking the transmission of nerve signals. Which of these three chemicals might work as anesthetics? (Choose all that apply and explain your selections.)
a. a chemical that prevents the opening of voltage-gated Na+ channels in membranes
b. a chemical that inhibits the enzymes that degrade neurotransmitters
c. a chemical that blocks neurotransmitter receptors
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John Hughes and Hans Kosterlitz identified the endorphin receptor in frogs, and concluded that animals have a "built in" opioid system. To make sure that endorphins are truly neurochemicals, which of the following question should we ask these gentlemen? Please select all that apply.a) Are endorphins released in response to presynaptic depolarization?
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Given what you already know about the sensation of pain, what is the expected change in membrane potential when pain is felt by sensory receptors?
Select one:
a. The nerve impulses increase in strength and lower the threshold potential.
b. The nerve impulses occur more frequently, thereby transmitting more action potentials according to the intensity of pain.
c. The nerve impulses occur more frequently and prevent neurons from entering the refractory period.
d. The nerve impulses increase in strength, thereby making the maximum membrane potential higher than normal.
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the neurotransmitter opens chemically activated chloride channels
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the neurotransmitter activates a second messenger which then opens calcium channels
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the neurotransmitter acts on a G-protein linked receptor which opens sodium channels
Chapter 28 Solutions
Campbell Biology: Concepts.. (Custom Package)
Ch. 28 - Test your understanding of the nervous system by...Ch. 28 - Fill in the blanks to match some brain structures...Ch. 28 - What causes a nerve signal to move from one end of...Ch. 28 - Prob. 4TYKCh. 28 - Prob. 5TYKCh. 28 - Anesthetics block pain by blocking the...Ch. 28 - Prob. 7TYKCh. 28 - Using microelectrodes, a researcher recorded nerve...Ch. 28 - Prob. 9TYK
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
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- What will be the receptor probability of the active state after you add a high dose of an antagonist?arrow_forwardGABA is an example of an inhibitory neurotransmitter. Drugs that increase the level of GABA are used to treat diseases such as epilepsy where the signal transmission needs to be impaired. The effect of the inhibitory neurotransmitter on the postsynaptic membrane is to: Select one: a. decrease the threshold level b. hyperpolarize the postsynaptic membrane c. depolarize the postsynaptic membrane d. maintain the resting potentialarrow_forwardYou studied how neurotransmitter act and their use in medicine. Based on the information answer how Tetrahydrocannabinol, the active ingredient in marijuana, will binds to receptors located in the ________ terminals of certain brain neurons and lowers the likelihood that these neurons will release ________. options: postsynaptic, neurotransmitters presynaptic, neurotransmitters presynaptic, Ca2+ ions postsynaptic, Ca2+ ionsarrow_forward
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- If given the choice of treating Parkinson’s disease pharmacologically with L-Dopa or invasively using deep brain stimulation which option would you pick and why? (arrow_forwardDrugs that block dopamine synapses tend to impair or slow limb movements. However, after people have taken such drugs for a long time, some experience involuntary twitches or tremors in their muscles. Based on material in this chapter, propose a possible explanation.arrow_forwardA patient has been exposed to the organophosphate pesticide malathion,which inactivates acetylcholinesterase. Which of the following symptoms would you predict: blurring of vision, excess tear formation, frequent or involuntary urination, pallor (pale skin), muscle twitching, orcramps? Would atropine be an effective drug to treat the symptoms?(See Clinical Impact 16.2 for the action of atropine.) Explain.arrow_forward
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