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KIN 3304 Exercise Physiology Exam 2 Study
Set||Verified Exam!!!||, 2026/2027 -Question Exercise
Science Examination with Verified Solutions||Newest
Exam!!!
What are the 2 types of Na+ gates that allow Na+ influx? -
Answer-Chemical gates and electrical gates
Where are chemical gates found? - Answer-nerve cell
bodies, dendrites, and in muscles at the nerve synapse
How are chemical gates opened? - Answer-
neurotransmitters
Where are electrical gates found? - Answer-neuronal
axons and distal to synapses in muscle cells
How are electrical gates opened? - Answer-when the
resting membrane potential exceeds a voltage threshold
How often can impulses be sent down an axon? - Answer-
As fast as the nerve can repolarize
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How are neurons repolarized? - Answer-Na+K+ pumps
are used and require ATP
What is a motor unit? - Answer-a motor neuron and all the
muscle cells it services
What type of charge do muscles have in a resting state? -
Answer-Negative
Why are multiple muscle cells activated by one neuron? -
Answer-If there was only one muscle cell per neuron, you
would have an increased number of neurons which means
you would need more muscle to carry your weight and this
cycle would continue
How do neurons communicate with each other and muscle
cells? - Answer-Neurons release neurotransmitters
What are neurotransmitters? - Answer-Chemicals released
by neurons which can cause excitation, facilitation, or
inhibition
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What are neuron activations or excitations? - Answer-
Waves of depolarization caused by Na+ influx
What causes neuron and muscle excitations? - Answer-
Na+ influx
What do Na+K+ pumps do? - Answer-they switch which
ions are going in and out (Na+ out and K+ in)
What is facilitation? - Answer-raising the resting
membrane potential a little; it increases the chance of
activation
What is inhibition? - Answer-lowering the resting
membrane potential below normal; decreases the chance
of muscle activating
What are the most common excitatory neurotransmitters?
- Answer-Norepinephrine and acetylcholine
What are the most common facilitory neurotransmitters? -
Answer-Norepinephrine and acetylcholine
KIN 3304 Exercise Physiology Exam 2 Study
Set||Verified Exam!!!||, 2026/2027 -Question Exercise
Science Examination with Verified Solutions||Newest
Exam!!!
What are the 2 types of Na+ gates that allow Na+ influx? -
Answer-Chemical gates and electrical gates
Where are chemical gates found? - Answer-nerve cell
bodies, dendrites, and in muscles at the nerve synapse
How are chemical gates opened? - Answer-
neurotransmitters
Where are electrical gates found? - Answer-neuronal
axons and distal to synapses in muscle cells
How are electrical gates opened? - Answer-when the
resting membrane potential exceeds a voltage threshold
How often can impulses be sent down an axon? - Answer-
As fast as the nerve can repolarize
,2|Page
How are neurons repolarized? - Answer-Na+K+ pumps
are used and require ATP
What is a motor unit? - Answer-a motor neuron and all the
muscle cells it services
What type of charge do muscles have in a resting state? -
Answer-Negative
Why are multiple muscle cells activated by one neuron? -
Answer-If there was only one muscle cell per neuron, you
would have an increased number of neurons which means
you would need more muscle to carry your weight and this
cycle would continue
How do neurons communicate with each other and muscle
cells? - Answer-Neurons release neurotransmitters
What are neurotransmitters? - Answer-Chemicals released
by neurons which can cause excitation, facilitation, or
inhibition
, 3|Page
What are neuron activations or excitations? - Answer-
Waves of depolarization caused by Na+ influx
What causes neuron and muscle excitations? - Answer-
Na+ influx
What do Na+K+ pumps do? - Answer-they switch which
ions are going in and out (Na+ out and K+ in)
What is facilitation? - Answer-raising the resting
membrane potential a little; it increases the chance of
activation
What is inhibition? - Answer-lowering the resting
membrane potential below normal; decreases the chance
of muscle activating
What are the most common excitatory neurotransmitters?
- Answer-Norepinephrine and acetylcholine
What are the most common facilitory neurotransmitters? -
Answer-Norepinephrine and acetylcholine
