Breathing And Exchange Of Gases Animal Respiration Question 8
Question: When you exhale, the diaphragm:
Options:
A) Relaxes and arches
B) Relaxes and flattens
C) Contracts and arches
D) Contracts and flattens
Show Answer
Answer:
Correct Answer: A
Solution:
[a] When you exhale, the diaphragm relaxes and arches.
This decreases the size of the thoracic cavity, which increases the pressure within the thoracic cavity, forcing air out of the lungs.
BETA
