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Ch. 48 - Neurons, Synapses, and Signaling
All textbooksCampbell 12th EditionCh. 48 - Neurons, Synapses, and SignalingProblem 2
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Chapter 48, Problem 2

A common feature of action potentials is that they a. cause the membrane to hyperpolarize and then depolarize. b. can undergo temporal and spatial summation. c. are triggered by a depolarization that reaches threshold. d. move at the same speed along all axons.

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Hello, everyone here. We have a question asking which of the following is not included in the faith of the action potential. The action potential includes includes the resting state. So it isn't a it includes a rising state. It does not include an explosion state. It does include an undershoot. So our answer here is C explosion state. Thank you for watching. Bye.
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Textbook Question

What happens when a resting neuron's membrane depolarizes? a. There is a net diffusion of Na+ out of the cell. b. The equilibrium potential for K+(EK) becomes more positive. c. The neuron's membrane voltage becomes more positive. d. The cell's inside is more negative than the outside.

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Textbook Question

Where are neurotransmitter receptors located? a. the nuclear membrane b. the nodes of Ranvier c. the postsynaptic membrane d. synaptic vesicle membranes

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Textbook Question

Why are action potentials usually conducted in one direction? a. Ions can flow along the axon in only one direction. b. The brief refractory period prevents reopening of voltage-gated Na+ channels. c. The axon hillock has a higher membrane potential than the terminals of the axon. d. Voltage-gated channels for both Na+ and K+ open in only one direction.

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Textbook Question

Which of the following is the most direct result of depolarizing the presynaptic membrane of an axon terminal? a. Voltage-gated calcium channels in the membrane open. b. Synaptic vesicles fuse with the membrane. c. Ligand-gated channels open, allowing neurotransmitters to enter the synaptic cleft. d. An EPSP or IPSP is generated in the postsynaptic cell.

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