A muscle relaxes after contracting when
A) calcium is taken up by internal organelles.
B) internal ACh is broken apart by acetylcholinesterase (AChE) .
C) troponin is taken up by internal organelles.
D) myosin and actin begin to interact.
Correct Answer:
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Q2: One major difference between striated and smooth
Q3: _ is a protein that makes up
Q4: The separation of actin molecules from myosin
Q5: What is the function of striated muscles?
A)
Q6: After Juliet has eaten a meal, her
Q7: Muscle fibers contract when Z lines move
Q8: Single segments of a myofibril are called
A)
Q9: The arrival of an action potential in
Q10: What causes muscles to twitch?
A) depolarization of
Q11: Slow-twitch muscle fibers are to _ as
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