physioex exercise 3 activity 8 Verified Questions And Answers With Verified Updates
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Course
Physioex exercise 3
Institution
Physioex Exercise 3
The neurotransmitter released into the synaptic gap reaches the target cell by - diffusion
You have just observed that each action potential in a burst can trigger additional neurotransmitter
release. If calcium ions are removed from the extracellular solution, what will happen to
neurotransmitt...
physioex exercise 3 activity 8
The neurotransmitter released into the synaptic gap reaches the target cell by - diffusion
You have just observed that each action potential in a burst can trigger additional neurotransmitter
release. If calcium ions are removed from the extracellular solution, what will happen to
neurotransmitter release at the axon terminal? - there will be more neurotransmitter release
The end of the axon where it contacts a target is called the - axon terminal
Neurotransmitter is released into the synaptic gap by - exocytosis
Exocytosis of neurotransmitter from the axon terminal is triggered by an increase in the intracellular
concentration of - Ca2+
At the target, neurotransmitter - binds to receptor proteins, causes membrane channels to open
or close, causes a change in membrane potentia
What will happen to neurotransmitter release when low amounts of calcium are added back to the
extracellular solution - neurotransmitter release will increase a small amount
What will happen to neurotransmitter release when magnesium is added to the extracellular solution? -
There will be no more neurotransmitter release
Why is there no neurotransmitter release from the axon terminal when there are no calcium ions in the
extracellular solution - exocytosis of the synaptic vesicles is calcium-dependent
Why did the high intensity stimulation fail to trigger the same amount of neurotransmitter release in the
presence of extracellular Mg2+ as in the control extracellular solution? - Mg2+ blocks the calcium
channels in the axon terminal
How is the neurotransmitter stored in the axon terminal before it is released? - contained in
synaptic vessicles
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