Question

Give reasons for the following :
1.) Lungs always contain a residual amount of air​

Answer 1

Answer: The lungs always contain a residual volume of air so that during breathing cycle there is sufficient time for oxygen to be absorbed and for the carbon dioxide to be released. Residual Volume is important because it prevents the lungs from collapsing.

Explanation:

Answer 2

Answer:

Explanation:

• lungs are present in a air tight camber created my the chest anatomy including ribs and diaphragm.
• as there must be some amount of pressure present inside the lungs for proper breathing therefore it always contains a residual amount of air called the residual volume which is 1200 ml approx. in an adult human.
• this residual volume of air prevents lungs from puncturing and collapsing during breathing.