Question

plz tell veryyy fasttt​

Answer 1

$\underline{ \huge\bf\red{QuestiOn} :}$

• INHALATION and EXHALATION

$\underline{ \: \huge\bf\green{SolutiOn} \: :}$

What Is Inhalation ?

• Occurs through active contraction of the muscles such as the diaphragm and is the action of breathing in.

• As part of the cycle of breathing, the process is autonomic and does not need conscious control.

• It begins with the contraction of muscles attached to the ribcage causing expansion in the chest cavity, where contraction of the diaphragm sets in resulting in the expansion of the intrapleural space and a rise in the negative pressure as per Boyle’s law.

What Is Exhalation ?

• It is the act of exhaling air taken in and is passive.

• Here, the diaphragm relaxes, moving upwards into the chest cavity.

• The intercostal muscles between the ribs relax, causing the area of the chest cavity to reduce.

• Eventually, the area in the chest reduces and carbon dioxide-rich air is expelled out of the lungs and windpipe, ultimately out of the nose.

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