QUESTION 69 Which of the following best describes residual lung volume? A. The air volume normally...

QUESTION 69

Which of the following best describes residual lung volume?

	A.	The air volume normally in the lungs
	B.	The air volume in the lungs after inhaling as deeply as possible
	C.	The air volume between the lung tissues
	D.	The air volume remaining in the lungs even after exhaling as deeply as possible

Expert Solution

Answer:

Option D (The air volume remaining in the lungs even after exhaling as deeply as possible)

Explanation: Residual lung volume is defined as one of the pulmonary (or lung) capacity. It is represented by RV and is defined as the total volume of the air which remains within the alveoli of the lungs even after the forceful expiration (that is process of giving off carbon dioxide).

The value of the residual volume is calculated to be around 1100-1200 ml.

It is because of the residual volume of the lungs, that an individual is able to survive for sometime despite getting deprived from oxygen.

The other pulmonary (lung) volumes include;

Tidal volume (TV): It is defined as the total amount of the air that can be inhaled or exhaled during normal breathing and its value is calculated to be around 500 ml

Inspiratory reserve volume (IRV): It is the amount of the air that is inspired after a forced inspiration and its value is around 2500-3000 ml

Expiratory reserve volume (ERV): It is the amount of air that can be expired forcefully even after a normal inspiration and its value is found to be around 1000-1100 ml

Sydney Mullin answered 2 years ago

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