Which one of the following is the correct sequence of events that correlates to the sequence of events of a nerve impulse?

Biology

1 answer:

quester [9]3 years ago

8 0

Answer:

the correct sequence of the events happened during nerve impulse is (d): 2,1,4,3

Explanation:

Originally K+ ions remains inward the membranes while Na+ ions remains outward to maintain a resting potential of membrane.

Upon stimuli Sodium channels open on membrane and Na+ diffuses inward leading to the depolarization of membrane that is it becoming more positive due to Na+ and K+ ions.

To regain it polarized state or in repolarization state Potassium channels open and K+ begun to diffuse outward while Sodium channels gets closed and Na+ ions remains inside the membrane.

Potassium channels are not efficient as compared to Sodium Channels, so an excess amount of K+ion move outward so Hyperpolarization state achieved.

As the both ions are on the wrong side and will not be available for the next nerve impulse. Hence in Refractory period by the help of Na+/K+ pum, both ions move back to their original place and membrane achieve its resting membrane potential state.

You might be interested in

Sensory receptors convert _____ into _____ by signal transduction.

strojnjashka [21]

Sensory receptors convert stimulus into electrical signals by signal transduction.

<h3>What is sensory receptors?.</h3>

Sensory receptors are found in specialized organs such as the eyes, ears, nose, and mouth, as well as internal organs. Each receptor type transmit stimulus or sensory modality which is interpreted to electrical signal and into a single perceptual frame eventually.

Therefore, Sensory receptors convert stimulus into electrical signals by signal transduction.

Learn more about sensory receptors here.

brainly.com/question/9173579

4 0

3 years ago

Is a nail holding two pieces of wood together desirable or non desirable?

shusha [124]

This is my opinion: I think two pieces of wood held together by nail is non desirable because I highly doubt that one nail can support enough unless the woods are shaped a certain way and is put together tightly that it won't go apart and has nail that supports it.

7 0

3 years ago

At which phase of the cell cycle does the cytoplasm of a cell divide to form two daughter cells?

Natali [406]

The M phase, as in the mitosis phase. During mitosis, cells divide and create two new cells. These cells are referred to as the daughter cells.

3 0

3 years ago

Does the ANIMAL CELL have a NUCLEOLUS?<br> A. Yes<br> B. No

koban [17]

A. Yes is correct. Hope that helps!

7 0

3 years ago

Question 4 of 10

igomit [66]

Answer:

A. <u>C with G, and A with T</u>

Explanation:

Like proteins, nucleic acids are long chains molecules. The nucleotides are linked through condensation so that the phosphate and the sugar residue form the chain with the organic bases projecting outwards.

The organic bases in DNA are adenine, guanine, thymine and cytosine.The linking is such that guanine always links with cytosine while adenine links with thymine. Guanine is complementary to Cytosine and Thymine is complementary to Adenine.

5 0

4 years ago