A muscle fiber is _ .
A) a rod-like structure consisting of sarcomeres placed end to end
B) an arrangement of actin and myosin filaments deep within a muscle cell
C) the elaborate arrangement of smooth endoplasmic reticulum inside a muscle cell
D) a muscle cell
Correct Answer:
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Q7: At the neuromuscular junction, the electrical signal
Q8: From gross to microscopic, the parts of
Q9: An aponeurosis is .
A) similar to a
Q10: This contractile protein is shaped like a
Q11: This indentation of the sarcolemma carries electrical
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
Q17: The actual contractile units of muscles extend
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