THORAX ABDOMEN AND PELVIS

MEDICAL

LUNGS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
When air pressure inside the lungs is less than the air pressure in the atmosphere
A
Air moves out of the lungs
B
Air move into the lungs
C
Either A or B
D
None of the above
Explanation: 

Detailed explanation-1: -Air moves into the lungs (inspiration) when the pressure inside the lungs is less than the air pressure in the atmosphere. Q. Assertion :Inspiration occurs when there is a negative pressure in the lungs with respect to the atmospheric pressure.

Detailed explanation-2: -When the air pressure within the alveolar spaces falls below atmospheric pressure, air enters the lungs (inspiration), provided the larynx is open; when the air pressure within the alveoli exceeds atmospheric pressure, air is blown from the lungs (expiration).

There is 1 question to complete.