During forced inhalation,the_____intercostal muscles contract, moving ___upward.

Biology
Tutor: None Selected Time limit: 1 Day

a.internal;the ribs

b.internal;the diaphragm

c.external;the diaphragm

d.external;both the diaphragm and the ribs

e.external; the ribs

Apr 25th, 2015

e. external; the ribs

The external intercostal muscles are responsible for forced and quiet inhalation. They raise the ribs and expand the chest cavity

Apr 25th, 2015

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Apr 25th, 2015
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Apr 25th, 2015
Dec 5th, 2016
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