Which of the following is true regarding normal quiet expiration of air?a. It is a passive process that depends on the recoil of elastic fibers that were stretched during inspiration. b. It depends on the complete lack of surface tension on the alveolar wall. c. It is driven by increased blood CO2 levels. d. It requires contraction of abdominal wall muscles.

Statement true regarding normal quiet expiration of air s

b) It is a passive process that depends on the recoil of elastic fibers that were stretched during inspiration.

Explanation:

The correct answer is option a. "It is a passive process that depends on the recoil of elastic fibers that were stretched during inspiration".

Explanation:

Normal quiet expiration is a passive process that depends on the recoil of elastic fibers that were stretched during inspiration. Expiration is a passive process that only requires of the relaxation of the elastic fibers that comprise the diaphragm muscle, but it depends in the contraction of this muscle that takes places during inspiration.

the water is warmed up by the sun and then it evaporates into the atmosphere. the sunlight warms the water by its heat. water is then cooled down and condensation takes place. the water then finally returns back to the earth by the process of precipitation in the form of rain or ice.

explanation: