Question

What structure separates the thoracic cavity from the abdominal cavity?

A) heart
B) diaphragm
C) intestines
D) liver
E) lungs

Answer 1

The diaphragm is the structure that separates the thoracic cavity from the abdominal cavity. It is a dome-shaped muscle located at the bottom of the ribcage.

Step-by-step explanation:

The structure that separates the thoracic cavity from the abdominal cavity is the diaphragm.

The diaphragm is a dome-shaped muscle located at the bottom of the ribcage. It contracts and relaxes to facilitate breathing and also acts as a barrier between the thoracic and abdominal cavities.