Answered: The rising phase of the action…

The rising phase of the action potential is the direct result of the: O inflow of potassium O inflow of sodium O inflow of sodium and potassium O outflow of sodium O outflow of sodium and potassium

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter4: Principles Of Neural And Hormonal Communication

Section4.3: Action Potentials

Problem 1CYU: Draw and label an action potential, indicating the ion movements responsible for the rising phase...

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Concept explainers

Osmosis

In simple words, osmosis is the slow, gradual movement of a liquid through a membrane. But there are nuances to this process. For instance, there has to be an imbalance in the distribution of solute in the liquid on either side of the membrane, which has to be semipermeable. The liquid in the region with a lower solute concentration moves to the region with a higher concentration, thereby displacing the solution in the process. The objective is to equalize the concentration of molecules on both sides of the membrane; the displacement of liquid can be viewed as a byproduct of this equalization. Since there is no energy required to carry osmosis, it is considered a passive process.

Question

The rising phase of the action potential is the direct result
of the:
O inflow of potassium
O inflow of sodium
O inflow of sodium and potassium
O outflow of sodium
O outflow of sodium and potassium

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Similar questions

Define an action potential.
The accelerating flow of _______ ions through gated channels across the membrane triggers an action potential. a. potassium b. sodium c. hydrogen d. a and b
Figure 35.11 Potassium channel blockers, such as amiodarone and procainamide, which are used to treat abnormal electrical activity in the heart, called cardiac dysrhythmia, impede the movement of K+ through voltage-gated K+ channels. Which part of the action potential would you expect potassium channels to affect?
Action potentials occur when ______. a. potassium gates close b. a stimulus pushes membrane potential to threshold c. sodium-potassium pumps become active d. neurotransmitter is reabsorbed
A neuron responds to adequate stimulation with _______, a type of self-propagating signal.
In the resting state, before or long after an action potential occurs, the activation gates of voltage regulated sodium channels are _____, the inactivation gates of the voltage regulated sodium channels are _____, and the voltage regulated potassium channels are _____
The level of depolarization at which an action potential will be triggered is referred to as the Multiple Choice a) cationic potential. b) membrane potential. c) threshold potential. d) refractory potential. e) resting potential.
Indicate which gate is responsible for halting the rising phase of the action potential. 1- Na+ inactivation gate opens 2- Sodium activation gate closes 3-Na+ inactivation gate closes 4- K+ gate closes 5-Na+ activation gate opens
During the _____ phase of an action potential, both gates of the voltage regulated sodium channels are open and the voltage regulated potassium channels are closed.
State the all-or-none law of the action potential.