MCAT Question A Day - 9/1/14 | FreeMCATPrep.com

MCAT Question A Day - 9/1/14

Muscles cause movement at joints by:

A. inciting neurons to initiate an electrical "twitch" in tendons.

B. increasing in length, thereby pushing the muscle's origin and insertion farther apart.

C. filling with blood, thereby expanding and increasing the distance between the ends of a muscle.

D. decreasing in length, thereby bringing the muscle's origin and insertion closer together.

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