A Z line is
A) a segment of myofibril.
B) a type of muscle fiber.
C) the boundary of a sarcomere.
D) the path of a muscular action potential.
Correct Answer:
Verified
Q7: Muscle fibers contract when Z lines move
Q8: Single segments of a myofibril are called
A)
Q10: What causes muscles to twitch?
A) depolarization of
Q12: Muscle fibers respond to
A)serotonin.
B)glutamate.
C)dopamine.
D)acetylcholine.
Q14: The lungs are moved by _ muscle
A)
Q15: In a resting muscle fiber,_ is covered
Q18: One major difference between striated and smooth
Q20: Slow-twitch fibers and fast-twitch fibers are both
Q31: Brandon loves to spend many hours per
Q37: Muscles dominated by slow-twitch fibers appear _
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