What allows the action potential to return to a repolarized state?

1 answer:

6 0

There are choices for this question namely:

a. K+ leaks into cells.
b. Voltage-gated Na+ channels become inactivated.
c. Voltage-gated K+ channels become inactivated.
d. Na+ reaches equilibrium across the neural membrane and stops leaking in.
e. Voltage-gated Na+ channels close.

The correct answer is "voltage-gated Na+ channels become inactivated". In the events concerning an action potential, the first event is a stimulus that depolarize the resting membrane potential up to the threshold. When the threshold is reached there will be opening of voltage gated Na+ channels wherein sodium can enter the cell and make the membrane more positive therefore called depolarization. After depolarization, voltage gated Na+ channels become inactivated and K+ leaks out of the cell making the cell less negative hence repolarization. After which, more and more K+ ions leaks out making the membrane more negative than the resting membrane potential hence hyperpolarization. When K+ channels are inactivated, the cell membrane will eventually go back to its resting membrane potential.

You might be interested in

PLLZZ I NEED HELP DUE SOON!!!!

pishuonlain [190]

Answer:

An antibody

Explanation:

6 0

3 years ago

What process of cellular respiration occurs at the inner membrane of the mitochondrion? (2 points)

Olin [163]

Aerobic Respiration

Cellular respiration involves a series of chemical reactions. The enzymes increase the rate of the reactions. So option “B” is the correct option as far as the given question is concerned. The reactions that are catalysed by enzymes actually helps the organism to grow, respond to various changes in the environment, reproduce and continue maintaining their own structures. Cellular respiration is also considered a part of the metabolism process. This process actually helps in carrying the oxygen through the blood.

5 0

4 years ago

Hello everyone,

Radda [10]

Answer:

Tomatoes have a rich flavor, high water content, soft flesh which breaks down easily, and the right composition to thicken into a sauce when they are cooked (without the need of thickeners such as roux). All of these qualities make them ideal for simple and appealing sauces

Explanation:

please mark me as brainalist

6 0

3 years ago

The inheritance of genetic traits from parents to children follows predictable rules. Knowing that each parent contributes genes

disa [49]

Answer C i think because it comes from both i hope this helps.

3 0

4 years ago

A light skinned person may appear pink when they become over heated. the best explanation for this is ________. the heart is pum

lana [24]

The correct answer is "the blood vessels of the dermis have undergone vasodilation, bringing a greater volume of blood to the skin"

This is because heat signals the temperature regulating center of the hypothalamus then the hypothalamus will respond to that signal by activating the sympathetic nervous system causing the vasodilation of the cutaneous blood vessels leading to more blood flow essentially cooling the skin by letting more heat to the outside environment.

7 0

4 years ago