Question

what is the importance of diaphragm in mammals​

Answer 1

Answer:

The diaphragm is a dome-shaped muscular structure. It separates the thoracic and the abdominal region of the body. The main function of the diaphragm is to aid in ventilation. During the process of inspiration and expiration, it contracts and relaxes simultaneously to change the volume of thoracic cavity which creates a pressure difference between the lungs and outer atmosphere which helps to inhale and exhale. During inspiration the diaphragm contracts and increases the volume of the thoracic cavity, and decreases the pressure inside the lungs, thus the air enters inside the lungs. During expiration the diaphragm relaxes and decreases the volume of the thoracic cavity, and increase the pressure inside the lungs, thus the air is forced out of the lungs.

Explanation:

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Answer 2

Answer:

The diaphragm separates the thoracic cavity, containing the heart and lungs, from the abdominal cavity and performs an important function in respiration: as the diaphragm contracts, the volume of the thoracic cavity increases, creating a negative pressure there, which draws air into the lungs.