PhysioEx Exercise 3 Activity 8 (Exercise 3: Neurophysiology of Nerve Impulses Activity 8: Chemical Synaptic Transmission and Neurotransmitter Release)

27-5-2021 PhysioEx Exercise 3 Activity 8


PhysioEx Lab Report
Exercise 3: Neurophysiology of Nerve Impulses
Activity 8: Chemical Synaptic Transmission and Neurotransmitter Release
Name:
Date:
Session ID:


Pre-lab Quiz Results
You scored 100% by answering 5 out of 5 questions correctly. 1 The

end of the axon where it contacts a target is called the

You correctly answered: axon terminal.

2 Neurotransmitter is released into the synaptic gap by

You correctly answered: exocytosis.

3 Exocytosis of neurotransmitter from the axon terminal is triggered by an increase in the intracellular
concentration of

You correctly answered: Ca2+.

4 Neurotransmitter released into the synaptic gap reaches the target cell by

You correctly answered: diffusion.

5 At the target, neurotransmitter

You correctly answered: does all of the above.


Experiment Results
Predict Questions
1 Predict Question 1: 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?

Your answer: There will be less neurotransmitter release.

2 Predict Question 2: What will happen to neurotransmitter release when low amounts of calcium are
added back to the extracellular solution?

Your answer: Neurotransmitter release will increase a small amount.

3 Predict Question 3: What will happen to neurotransmitter release when magnesium is added to the
extracellular solution?


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