Podcast
Questions and Answers
What is the driving force for Na+ influx at resting membrane potentials?
What is the driving force for Na+ influx at resting membrane potentials?
- Greater concentration of Na+ outside the cell than inside (correct)
- Inactivation of the Na+ channels
- Greater concentration of Na+ inside the cell than outside
- Desensitization of the nicotinic acetylcholine receptor
What triggers the firing of an action potential by the muscle cell?
What triggers the firing of an action potential by the muscle cell?
- Desensitization of the nicotinic acetylcholine receptor
- Depolarization of the muscle membrane (correct)
- Inactivation of the voltage-gated sodium channels
- Repolarization of the muscle membrane
How many acetylcholine molecules bind to the nicotinic acetylcholine receptor to activate it?
How many acetylcholine molecules bind to the nicotinic acetylcholine receptor to activate it?
- 2 (correct)
- 1
- 3
- 4
What is the primary location of acetylcholinesterase (AChE) in the neuromuscular junction?
What is the primary location of acetylcholinesterase (AChE) in the neuromuscular junction?
What is the central problem of the neuromuscular junction?
What is the central problem of the neuromuscular junction?
What is the key concept about the neuromuscular junction?
What is the key concept about the neuromuscular junction?
What are the objectives related to the neuromuscular junction?
What are the objectives related to the neuromuscular junction?
What is the main characteristic of the neuromuscular junction?
What is the main characteristic of the neuromuscular junction?
What is the role of the presynaptic membrane?
What is the role of the presynaptic membrane?
What is the function of rapsyn at the neuromuscular junction?
What is the function of rapsyn at the neuromuscular junction?
How does the amount of ACh in a synaptic vesicle impact the postsynaptic membrane?
How does the amount of ACh in a synaptic vesicle impact the postsynaptic membrane?
What happens when voltage-gated Ca+2 channels on the presynaptic membrane allow Ca+2 to enter the cytoplasm?
What happens when voltage-gated Ca+2 channels on the presynaptic membrane allow Ca+2 to enter the cytoplasm?
