Question

Diaphragm is a thick muscular partition at the floor of the chest cavity.

• A. True
• B. False

Answer 1

The correct option is A True

$\bullet$ The floor of the chest cavity has a thick muscular partition known as the diaphragm. It separates the abdominal cavity and the thoracic cavity.
$\bullet$ It performs a significant function in respiration. It moves up and down during inhalation and exhalation.
$\bullet$ Lowering of the diaphragm causes a decrease in the pressure on lungs. Due to which, air moves into the lungs through nose.
$\bullet$ When diaphragm rises up, pressure on the lungs increase and as a result, air moves out.