Question

explain why cardiac muscles work continuously without tiring from early embryonic stage till death.
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Answer 1

Cardiac muscles work continuously without tiring from early embryonic stage till death.

Cardiac muscles are the muscles of heart. Based on appearance, cardiac muscles are striated. They are involuntary in nature as the nervous system does not control their activities directly. These muscles are branched, possess excitability, contractility, extensibility and elasticity. Hence, control the contraction and relaxation of the heart. The rhythmic contraction and relaxation of cardiac muscles occurs throughout life. These help in pumping blood throughout the body.

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Answer 2

Hi there!

Question :-

Explain why cardiac muscles work continuously without tiring from early embryonic stage till death.

Your answer :-

The cardiac muscle has the highest amount of mitochondria of any muscle. Almost 30% of its weight is mitochondria. This is why the cardiac muscle work continuously without getting tired from early embryonic stage till death.

Related stuff :-

1. Where are cardiac muscle found?

Answer: the human heart

2. What are the three types of muscles?

Answer: Skeletal Muscle

Smooth Muscle

Cardiac Muscle

3. Give some characteristics of cardiac muscles.

Answer:

• They are involuntary and intrinsically controlled, striated, branched, and single nucleated.
• Cardiac muscle is considered to be an involuntary tissue because it is controlled unconsciously by regions of the brain stem and hypothalamus.

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