[Campbell Biology P.9] According to the BioFlix Animation on the Mechanics of breathing, w... | Practice Question

According to the BioFlix Animation on the Mechanics of breathing, what anatomical structure is described as 'a sheet of skeletal muscle that forms the bottom wall of the cavity' and is involved in expanding the thoracic cavity during inhalation?

  • A: Rib muscles
  • B: Thoracic cavity
  • C: Diaphragm
  • D: Lungs

Explanation

The text for the BioFlix Animation explicitly describes the 'diaphragm' as 'a sheet of skeletal muscle that forms the bottom wall of the cavity' and mentions its role in inhalation.