General Physiology Lecture: Contraction cycle process:
a. Myosin heads bind to actin, forming crossbridges
b. As myosin heads bind ATP, the crossbridges detach from actin
c. Myosin crossbridges rotate toward center of the sarcomere (power stroke)
d. Myosin heads hydrolyze ATP and become reoriented and energized

Question

Contraction cycle process: 
a. Myosin heads bind to actin, forming crossbridges
b. As myosin heads bind ATP, the crossbridges detach from actin
c. Myosin crossbridges rotate toward center of the sarcomere (power stroke)
d. Myosin heads hydrolyze ATP and become reoriented and energized

Stelle Anthonette · Accepted Answer

a. 2.
b. 4. 
c. 3. 
d. 1.

General Physiology Lecture

Contraction cycle process: a. Myosin heads bind to actin, forming crossbridges b. As myosin heads bind ATP, the crossbridges detach from actin c. Myosin crossbridges rotate toward center of the sarcomere (power stroke) d. Myosin heads hydrolyze ATP and become reoriented and energized

A. 2. b. 4. c. 3. d. 1.

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