Question

The thoracic cavity is separated from the abdominal cavity by ___________.

• A. trachea
• B. diaphragm
• C. larynx
• D. lungs

Answer 1

The correct option is B diaphragm

Lungs are pairs of large, spongy organs that are involved in exchange of gases between the blood and the air. They rest on a muscular sheet called the diaphragm. The main functions of the diaphragm are-

• It internally separates the thoracic cavity from the abdominal cavity.
• It regulates the volume of the thoracic cavity during inhalation and exhalation.