Multiple Choice
The action potential on the axon at a neuromuscular junction
A) Opens ryanodine-sensitive channels on the SR m embrane
B) Increases cytoplasmic [Ca2+] in the terminal by opening voltage-gated Ca2+ cha nn els
C) Opens the DHPR on the T-tubule
D) Is conveyed electrotonically to the muscle mem brane
E) Both A and C are correct
Correct Answer:
Verified
Correct Answer:
Verified
Q12: All of the following are true about
Q13: Relaxation of skeletal muscle is caused by<br>A)
Q14: The Ca<sup>2+</sup> release channel on the SR
Q15: There is no force developed in the
Q16: The voltage-sensor on the muscle membrane is
Q18: Opening of acetylcholine receptors by acetylcholine directly
Q19: A nerve has a resting m embrane
Q20: The end-plate potential<br>A) Is graded (varies continuously)<br>B)
Q21: The acetylcholinesterase at the neuromuscular junction is
Q22: A neurotransmitter released onto a motor neuron