Question

the combine working of__________and diaphragm help to regulate the volume of thoracic cavity ​

Answer 1

Answer:

$\huge{\boxed{\boxed{\underline{\rm{\pink{♡AnSwEr♡}}}}}}$

Explanation:

Lung volume expands because the diaphragm contracts and the intercostals muscles contract, thus expanding the thoracic cavity. This increase in the volume of the thoracic cavity lowers pressure compared to the atmosphere, so air rushes into the lungs, thus increasing its volume.When the diaphragm contracts, it moves inferiorly toward the abdominal cavity, creating a larger thoracic cavity and more space for the lungs. Contraction of the external intercostal muscles moves the ribs upward and outward, causing the rib cage to expand, which increases the volume of the thoracic cavity.