What happens when you inhale?
a. Chest cavity expands and diaphragm relaxes.
b. Chest cavity expands and diaphragm contracts.
C. Chest cavity compresses and diaphragm relaxes,
d. Chest cavity compresses and diaphragm contracts.
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What happens when you inhale?
a. Chest cavity expands and diaphragm relaxes.
b. Chest cavity expands and diaphragm contracts.
C. Chest cavity compresses and diaphragm relaxes,
d. Chest cavity compresses and diaphragm contracts.
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Answer:
When the lungs inhale, the diaphragm contracts and pulls downward. At the same time, the muscles between the ribs contract and pull upward. This increases the size of the thoracic cavity and decreases the pressure inside. As a result, air rushes in and fills the lungs.