MPP 3202 Prelab 6 Questions & Answers.
one; lower motor neuron - CORRECT ANSWER In the somatic motor neuron pathway, how many neurons run from the spinal cord to the target skeletal muscle cell (the peripheral nervous system)?
What is the name of this/these neuron(s)?
NAChR - CORRECT ANSWE...
one; lower motor neuron - CORRECT ANSWER In the somatic motor neuron pathway, how many
neurons run from the spinal cord to the target skeletal muscle cell (the peripheral nervous system)?
What is the name of this/these neuron(s)?
NAChR - CORRECT ANSWER What type of ligand gated sodium channels are located at the skeletal
muscle membrane in the neuromuscular junction?
reuptake; pre - CORRECT ANSWER The 3 ways that neurotransmitters can be removed from the synapse
are 1) diffusion out of the synaptic space 2) ______by a transporter located on the (pre or post)
______synaptic nerve or 3) an enzyme on the post synaptic cell body.
acetylcholinesterase - CORRECT ANSWER What is the name of the enzyme that breaks down
acetylcholine at the neuromuscular junction.
false - CORRECT ANSWER The calcium that triggers vesicles to fuse with the membrane of the lower
motor neuron comes from the same source as the calcium that causes skeletal muscle contraction. (T or
F)
1- Voltage gated sodium channels send an action potential towards the nerve terminal
2- Voltage gated calcium channels open
3- Calcium comes into the nerve terminal
4- Vesicles fuse with the membrane and release neurotransmitter into the synaptic space
5- Neurotransmitter binds its specific receptor and causes a graded potential
6- Neurotransmitter is removed from the synaptic cleft - CORRECT ANSWER Order the following steps in
sequence for normal synaptic signaling.
1- Action potential in the lower motor neuron
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