Which of the following substances is released from the sarcoplasmic reticulum into the sarcoplasm to initiate skeletal muscle contraction?
A) potassium
B) calcium
C) ATP
D) phosphate
E) sodium
Correct Answer:
Verified
Q7: The darker portion of the sarcomere composed
Q8: Tunnel-like extensions of the sarcolemma into a
Q9: Which of the following substances can block
Q10: Muscle fatigue can be caused by
A)increased ADP.
B)insufficient
Q11: An individual sarcomere within a myofibril is
Q13: The organelle that stores calcium in a
Q14: Each individual muscle fiber is covered by
Q15: The pigmented protein in skeletal muscle fibers
Q16: Acetylcholine that has been released into the
Q17: The neurotransmitter released from the motor neuron
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