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crimeas [40]
3 years ago
14

The rapid inward diffusion of Na+ followed by the outward diffusion of K+ produces a rapid change in the membrane potential of a

neuron called ____.
Biology
1 answer:
grandymaker [24]3 years ago
3 0

Answer: depolarization

Explanation:

On depolarization, the sodium gates in the neuron membrane closes after sodium ions flow inside, while potassium gates open causing potassium ions to flow out and reestablish the original resting potential of the membrane.

The rapid change in membrane potential from resting to action potential is DEPOLARIZATION

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Explanation:

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How do scientists monitor populations for signs of pollution and why is this important?
Aleksandr [31]

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6 0
3 years ago
14) Vernix caseosa is a _
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3 0
3 years ago
The spontaneous action potential established in cardiac contractile cells is highly dependent on which of the following? A. The
Arada [10]

Answer:

E. All of the above

Explanation:

In cardiac contractile cells there is rapid depolarization, then a plateau phase and repolarization.

when an action potential stimulates the cell, voltage-gated channels open quickly commencing the positive-feedback mechanism of depolarization. This in turn raises the membrane potential to approximately +30 mV, and this closes the sodium channels. Next comes the plateau phase, where membrane potential declines relatively slowly due to the opening of the slow Ca2+ channels, allowing Ca2+ to enter the cell while few K+ channels are open, leading to K+ to exit. Once the membrane potential reaches approximately zero, the Ca2+ channels close and K+ channels open, allowing the exit of K+. The repolarization lasts approximately for a while and here is when the membrane potential drops until it reaches resting levels once more and repeats the cycle.

4 0
3 years ago
A meal consisting of a cheeseburger, large fries, and a chocolate shake provides a total of 1120 kcal. Forty-eight percent of th
nevsk [136]

Answer:

The answer to your question is 436.8 kcal of lipids

Explanation:

Data

Total number of calories = 1120 kcal

48 % carbohydrates

13 % proteins

? % lipids

Process

1.- Sum the percent of proteins and carbohydrates

            48% + 13% = 61 %

2.- Calculate the 61% of 1120

             1120 kcal -----------------  100%

                x            -----------------   61%

                x = (61 x 1120) / 100

                x = 68320 / 100

                x = 683.2 kcal

     683.2 kcal are proteins and carbohydrates

     kcal of lipids = 1120 - 683.2

                          = 436.8 kcal

3 0
3 years ago
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