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Feliz [49]
4 years ago
9

"during expiration, which best describes the role of the diaphragm?"

Biology
1 answer:
Scilla [17]4 years ago
3 0
During respiration, the diaphragm moves upwards and returns to dome shape from the flattened shape before during expiration.

This movement of diaphragm can decrease the lung volume, increase the pressure inside and thus force the air out. This process is expiration.

However, if we breathe in again, which makes that inhalation, the diaphragm moves downwards into a flat shape so that it can increase the lung volume and thus we can breathe in as much air we can. This process is completely opposite from expiration.
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Answer:

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Explanation:

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3 years ago
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Answer: All of these

Explanation:

The polymerase chain reaction (PCR) revolutionized the field of molecular biology because PCR uses a small amount of DNA as a template.Paired with two primers which side to the target sequence, nucleotides, and thermostable DNA polymerase amplifies a specific region of DNA. In this way a large amount of DNA is obtained from a very small sample.

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3 years ago
select one of the main body systems and explain why it is essential to keep the whole body functioning
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Circulatory system: 

--The circulatory system is also known as the cardiovascular system. 
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The primary function of the circulatory system to distribute oxygen, nutrients, hormones and other gases to cells of the other body systems. It delivers all the necessary components needed for all the cell activities. Without the circulatory system, we would not be alive. 

It is our blood that carries these necessary nutrients, hormones, and oxygen. All these components trigger certain processes that keep other organs functioning. It also plays a role in eliminating waste by carrying them to the necessary organs that will filter them out. Without a way to dispose of waste, the body will eventually die.
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3 years ago
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4 years ago
Red-green color blindness is an X-linked recessive disorder that is passed through generations and can be traced by using a pedi
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3 0
3 years ago
Read 2 more answers
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