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Veseljchak [2.6K]
3 years ago
8

SA nodal cells are unique in that they exhibit autorhythmicity, meaning they are capable of depolarizing and firing an action po

tential spontaneously without any external influence.
1. True
2. False
Biology
1 answer:
BigorU [14]3 years ago
8 0

Answer:

1) True

Explanation:

Cells of Sinoatrial (SA) node make up the auto rhythmic cells of heart as in normal physiological conditions , SA-node is responsible to set the pace of the rest of the heart (pacemaker) at a rate of 70 to 80 beats per minute.

The cells of SA node has the ability to self-excite thus able to generate action potential without external stimulation by nerve cells. Thus they initiate the cardiac cycle providing the conduction system.

Hence the statement , SA nodal cells are unique in that they exhibit autorhythmicity, meaning they are capable of depolarizing and firing an action potential spontaneously without any external influence, is true.

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GREYUIT [131]

Answer:

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I'm not 100% sure what you're looking for, sorry!

Explanation:

3 0
3 years ago
Explain the law of conservation of mass in simple terms?
yulyashka [42]
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5 0
2 years ago
Muscles that move the eyeball have ________ fibers.
ozzi

Muscles which are responsible for the movement of the eyeball have fast fibers. Thus, the correct option is A.

<h3>What are fast muscle fibers?</h3>

Fast-twitch muscle fibers are the muscle fibers which provide bigger and more powerful forces, however for shorter durations and fatigue quickly. They are more anaerobic with less blood supply, and hence are sometimes also referred to as white fibers or type II fibers.

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Therefore, the correct option is A.

Learn more about Eyeball here:

brainly.com/question/10945999

#SPJ1

Your question is incomplete, most probably the complete question is:

Muscles that move the eyeball have ________ fibers.

A) fast

B) slow

C) intermediate

D) circular

E) All of the answers are correct.

4 0
1 year ago
Which of these best fits the box labeled A?
jeyben [28]
C is the answer I just check it on mine
4 0
3 years ago
When fungi and bacteria decompose organic matter, they return ____ to the environment.
makkiz [27]

Answer:

<u>Carbon</u> and <u>nitrogen</u>.

<em>probably</em>

Hope that helped :)

6 0
2 years ago
Read 2 more answers
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