The Floor of the Thoracic Cavity is a Strong, Dome-Shaped

Question

The floor of the thoracic cavity is a strong, dome-shaped muscle called the ________.
A) thorax
B) biceps femoris
C) diaphragm
D) intercostal muscle

Accepted Answer

The diaphragm is a strong, dome-shaped muscle that separates the thoracic cavity from the abdominal cavity. It contracts and flattens during inhalation, allowing air to enter the lungs.