Answer:
It separates the chest from the abdominal cavity and helps in respiration.
Step-by-step explanation:
The diaphragm is a muscle structure located between the abdomianal cavity and the chest. It is involved in the process of respiration, it has the role to facilitates inhalation and exhalation. During the inhalation, diaphragm contracts and becomes flat (this pulls the air into the lungs). During the exhalation, diaphragm relaxes.