Medical Quiz

Topics: Musculoskeletal System Quiz

The bond between the actin and myosin head is broken when…
A. an ATP molecule binds to the myosin head.
B. an ATP molecule binds to the actin molecule.
C. ADP and phosphate bind to the myosin head.
D. an ATP molecule breaks down on the actin molecule.

Select your answer:
     


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What state is the sarcomere in #1
A.     Relaxed
B.     Contracting
C.     Fully Contracted
D.     None of the above