During inhalation the diaphragm moves. a) upwards b) downwards c) towards left d) towards right
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Answer:
During inhalation, the external intercostal muscles contract and lifts ribs outward, while diaphragm become flat and moves down thereby increases the volume of thoracic cavity.
During exhalation, the external intercostal muscles return the diaphragm and ribs to their normal thoracic volume. Ribs moves down and inwards while diaphragm moves up.
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Answer:
a) upward
Explanation:
During inhalation the diaphragm moves upward.
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