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Question

The thoracic cavity is separated from the abdominal cavity by ___________.
  1. trachea
  2. larynx
  3. diaphragm 
  4. lungs


Solution

The correct option is C 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.

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