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B3.1 Gas Exchange
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Total cards: 2•Content version: v4•Public deck•Updated: 8/1/2026
Card preview (2)
#1
Front (Question)
inspiration process
Back (Answer)
external intercostal muscles contract ribcage moves up and out diaphragm contracts and flattens vol of thorax increases pressure inside decreases air is drawn in
#2
Front (Question)
expiration process
Back (Answer)
external intercostal muscles relax ribcage moves down and in diaphragm relaxes and becomes dome shaped vol of thorax decreases pressure inside thorax increases air is forced out