The actual contractile units of muscles extend from Z disc to Z disc. They are _.
A) sarcoplasmic reticulum
B) thick filaments
C) sarcomeres
D) myofibrils
Correct Answer:
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Q12: A muscle fiber is _ .
A) a
Q13: The neuromuscular junction consists of .
A) a
Q14: A neuron and all the muscle fibers
Q15: This strong, cord-like structure attaches muscles to
Q16: Sarcomeres consist of _.
A) a network of
Q18: The dark band of skeletal muscle consists
Q19: Terminal cisterns _.
A) store acetylcholine
B) carry the
Q20: The space between the axon terminal and
Q21: The I-band consists of .
A) thin filaments
B)
Q22: A triad consists of _ .
A) sarcomeres
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