Question

The the below me how the diaphragm and boage moves during in an
and exhalation Replace Ano and correctly
Fibcage
D​

Answer 1

During inhalation, the external intercostal muscles contract and lifts ribs outward, while diaphragm become flat and moves down thereby increases the volume of thoracic cavity.

During exhalation, the external intercostal muscles return the diaphragm and ribs to their normal thoracic volume. Ribs moves down and inwards while diaphragm moves up.

So the correct answer is Both A and B'....