In an isotonic contraction, the muscle ________

A) does not change length, but increases in tension
B) changes in length and moves the "load"
C) never converts pyruvate to lactic acid
D) rapidly resynthesizes ATP


B
Explanation:
A) The muscle changes length in an isotonic contraction.
C) Pyruvate converts to lactic acid when there is a lack of oxygen.
D) ATP is not always rapidly resynthesized by the cell.

Exercise 22: Post-Lab Questions

Anatomy & Physiology

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