If we excite a motor neuron to fire an action potential in the presence of EGTA to complex all of the Ca2+
A) Acetylcholine release will be reduced and the EPP will be reduced, but the muscle will
contract
B) Neurotransmission will be unaffected but contraction will be blocked because it requires Ca2+
C) Neurotransmission will be blocked and so there will be no contraction
D) Neurotransmission block can be overcome by repetitive stimulation
E) The neuron cannot fire an action potential in the absence of Ca2+
Correct Answer:
Verified
Q2: A nerve has a resting m embrane
Q3: Relaxation of skeletal muscle is caused by
A)
Q4: The action potential on the axon at
Q5: All of the following are true about
Q6: The end-plate potential
A) Is graded (varies continuously)
B)
Q7: Opening of acetylcholine receptors by acetylcholine directly
Q8: The acetylcholine receptor at the neuromuscular junction
Q9: The final intracellular activator of skeletal muscle
Q10: The acetylcholinesterase at the neuromuscular junction is
Q11: The most common cause of myasthenia gravis
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