CBSE Class 7 Answered
WHAT IS DIAPHGRAM
Asked by deepankerdas14 | 08 Nov, 2014, 02:25: PM
Expert Answer
The diaphragm is the dome-shaped sheet of muscle and tendon that serves as the main muscle of respiration and plays a vital role in the breathing process.When we inhale, the diaphragm contracts and is drawn inferiorly into the abdominal cavity until it is flat.During exhalation, the rib cage drops to its resting position while the diaphragm relaxes and elevates to its dome-shaped position in the thorax. Air within the lungs is forced out of the body as the size of the thoracic cavity decreases.
Answered by Sivanand Patnaik | 08 Nov, 2014, 10:26: PM
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