The inspiratory muscles include the
A) diaphragm and internal intercostal muscles.
B) diaphragm and external intercostal muscles.
C) diaphragm and abdominal muscles.
D) internal and external intercostal muscles.
E) none of these answers.

Question

Quizplus · Accepted Answer

The inspiratory muscles include the diaphragm and external intercostal muscles, which contract to increase the size of the thoracic cavity and allow for inspiration of air into the lungs. The diaphragm is the main muscle responsible for inspiration, while the external intercostal muscles assist in lifting the rib cage to further expand the thoracic cavity. The other options listed do not accurately describe the inspiratory muscles.

The Inspiratory Muscles Include the