Question

state the role of diaphragm and rib muscles in breathing
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Answer 1

Answer:

1. The diaphragm is the most important muscle in the process of respiration.

2. It separates the thoracic cavity, containing the heart and lungs, from the abdominal cavity.

3. During normal inspiration, your diaphragm contracts and moves downward.

4. As the diaphragm contracts, the volume of the thoracic cavity increases, creating a negative pressure there, which draws air into the lungs.

5. And your lungs expand into it. The muscles between your ribs also help enlarge the chest cavity.

6. They contract to pull your rib cage both upward and outward when you inhale.

7. Its high oxygen consumption is noted by the many mitochondria and capillaries present; more than in any other skeletal muscle.