Question

The sheet of a muscle at the lower surface of the lungs is called ​

Answer 1

Answer:

diaphragm

Explanation:

The lungs which are located in the thoracic cavity, are protected from physical damage by the rib cage. At the base of the lungs is a sheet of skeletal muscle called the diaphragm. The diaphragm separates the lungs from the stomach and intestines.

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Answer 2

Answer:

Diaphragm

it extends horizontally underneath the ribcage