Contraction and relaxation of the diaphragm and intercostals muscles (found between the ribs) cause most of the pressure changes that result in inspiration and expiration.
Explanation:
These muscle movements and subsequent pressure changes cause air to either rush in or be forced out of the lungs.
Answers & Comments
Answer:
Contraction and relaxation of the diaphragm and intercostals muscles (found between the ribs) cause most of the pressure changes that result in inspiration and expiration.
Explanation:
These muscle movements and subsequent pressure changes cause air to either rush in or be forced out of the lungs.
CTTO.