4. Contraction of the intercostal muscles and diaphragm cause the thor

1.	4. Contraction of the intercostal muscles and diaphragm cause the thoracic cavity to and the air pressure in the lungs to[ ]A) expand; decreaseB) expand; increaseC) contract; increaseD) contract; decrease
Answer» ong>Explanation: The correct option is A because when Contraction of INTERCOSTAL muscles and diaphragm takes place the thoracic cavity EXPANDS because the pressure of lungs before inspiration is equal to the PRESURE of 1 ATM. During Inspiration, The volume of lungs increase the pressure in the lungs decreases. if you are satisfy with my ans then mark me as a brainlist if there is something wrong then kindly rectify through my question or inbox so that i can rectify myself. more queries about it can dm me on insta. Thank u

4. Contraction of the intercostal muscles and diaphragm cause the thoracic cavity to and the air pressure in the lungs to[ ]A) expand; decreaseB) expand; increaseC) contract; increaseD) contract; decrease

Answer»

ong>Explanation:

The correct option is A because when Contraction of INTERCOSTAL muscles and diaphragm takes place the thoracic cavity EXPANDS because the pressure of lungs before inspiration is equal to the PRESURE of 1 ATM. During Inspiration, The volume of lungs increase the pressure in the lungs decreases.

if you are satisfy with my ans then mark me as a brainlist

if there is something wrong then kindly rectify through my question or inbox so that i can rectify myself. more queries about it can dm me on insta. Thank u

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