How does lung volume control inspiration?

Select one:

AA decrease in lung volume stops the intake of air from the nose and mouth.
BAn increase in lung volume starts the intake of air from the nose and mouth.
CAn increase in lung volume decreases the pressure within the lungs so air can flow inside.

Question

16-02-2017
Biology

Answered

How does lung volume control inspiration?

Select one:

AA decrease in lung volume stops the intake of air from the nose and mouth.
BAn increase in lung volume starts the intake of air from the nose and mouth.
CAn increase in lung volume decreases the pressure within the lungs so air can flow inside.

Verified Answer :

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marywalker2803 marywalker2803 · Answer 1 · 2018-03-14T11:42:44-04:00

marywalker2803 marywalker2803

14-03-2018

A decrease in lung volume decreases the pressure within the lungs so air can flow inside.

Answer Link

JoiePatel JoiePatel · Answer 2 · 2019-02-15T04:47:46-05:00

Answer:

The correct answer would be c. An increase in lung volume decreases the pressure within the lungs so air can flow inside.

During inspiration or breathing in, the diaphragm contract and move downwards which increases the volume of the chest cavity. Consequently, the volume of the lungs also increases.

In addition, the contraction of intercostal muscles pulls the ribcage outwards and upwards which also increases the size of the chest cavity.

This also increases the lung volume due to which the air pressure inside the lungs is decreased as compared to the air pressure outside the body.

It results in the movement of air inside the lungs from outside the body as air moves from the region of high pressure to the region of low pressure.

How does lung volume control inspiration? Select one: AA decrease in lung volume stops the intake of air from the nose and mouth. BAn increase in lung volume starts the intake of air from the nose and mouth. CAn increase in lung volume decreases the pressure within the lungs so air can flow inside.

Verified Answer :

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