Biology for IGCSE & O level - Gas Exchange In Humans (Section 1 - No. 19)
What is the relationship between the diaphragm and the chest cavity during inhalation?
Diaphragm contracts, chest cavity volume decreases.
Diaphragm relaxes, chest cavity volume decreases.
Diaphragm contracts, chest cavity volume increases.
Diaphragm relaxes, chest cavity volume increases.
Explanation
Contraction of the diaphragm expands the chest cavity.
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