Question

Which way does air flow when alveolar pressure is greater than atmospheric pressure?
a. into the lungs, called expiration
b. out of the lungs, called inspiration
c. into the lungs, called inspiration
d. out of the lungs, called expiration

Answer 1

Answer:c

Explanation:because the body will automatically react

To the air in your body

Answer 2

The air flow when alveolar pressure is greater than atmospheric pressure into the lungs, called inspiration

What is alveolar pressure?

• The pressure of air inside the lungs of alveoli is called alveolar pressure.
• The normal alveolar pressure is -10cm  $H_{2}O$ at the end of the inspiration.
• The alveolar pressure is positive when it exceed the atmospheric pressure and alveolar pressure is negative when it below the atmospheric pressure

What is inspiration?

• The process of breathing or respiration is divided into two phases.
• Inspiration or inhale :It is first phase in which lungs inhale air.

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