Rigor mortis,or the muscle stiffness present after death,results primarily from
A) a drop in acetylcholine levels.
B) a lack of energy needed to separate actin and myosin molecules.
C) an increase in intracellular calcium concentrations.
D) the breakdown of troponin molecules.
Correct Answer:
Verified
Q6: The separation of actin molecules from myosin
Q7: Slow-twitch muscle fibers are to _ as
Q7: Muscle fibers contract when Z lines move
Q8: Q8: Single segments of a myofibril are called Q9: Nutrients are moved through the digestive tract Q10: A muscle relaxes after contracting when Q12: Muscle fibers respond to Q15: In a resting muscle fiber,_ is covered Q20: Slow-twitch fibers and fast-twitch fibers are both
A)
A)calcium is
A)serotonin.
B)glutamate.
C)dopamine.
D)acetylcholine.
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