McGraw-Hill Online Learning Center Test

McGraw-Hill Online Learning Center Test


1. Review the image and answer the following questions.

Where does the energy for actual muscle contraction come from?

A. ATP
B. acetylcholine
C. dystrophin
D. myoglobin


2. What produces the shortening of muscle sarcomeres?

A. the shortening of the tubulin cytoskeleton
B. changes in the sarcoplasmic reticulum
C. the sliding of actin myofilaments against the myosin myofilaments
D. the covering of the active sites on the actin myofilaments
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