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Question
During inhalation, the diaphragm moves _______ .
During inhalation, the diaphragm moves _______ .
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Solution
The correct option is B down
Diaphragm is the muscular sheet which separates the chest cavity and the abdominal cavity. The contraction and relaxation of the diaphragm are necessary for inhalation and exhalation. During inhalation, the diaphragm moves down, increasing the volume of the chest cavity. As volume increases, pressure drops down and outside air gushes inside the lungs.
down
Diaphragm is the muscular sheet which separates the chest cavity and the abdominal cavity. The contraction and relaxation of the diaphragm are necessary for inhalation and exhalation. During inhalation, the diaphragm moves down, increasing the volume of the chest cavity. As volume increases, pressure drops down and outside air gushes inside the lungs.
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