Answer:
The two main muscles of inspiration are the diaphragm muscle and intercostal muscles
a) True
Explanation:
These muscles grant normal processes of inhalation and exhalation. They contribute to the expansion of the thoracic cavity.
Diaphragm is the major respiration muscle. It contracts during inhalation and makes ribs move upwards and outwards causing thoracic expansion.
External intercostal muscles, assist by making ribs and sternum raise during their contraction.
