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1. How much of a change in the membrane potential is necessary for the summation of postsynaptic potentials to result in an action potential being generated?
 
 
 
 

Question 1 of 7

2. A channel opens on a postsynaptic membrane that causes a negative ion to enter the cell. What type of graded potential is this?
 
 
 
 

Question 2 of 7

3. What neurotransmitter is released at the neuromuscular junction?
 
 
 
 

Question 3 of 7

4. What type of receptor requires an effector protein to initiate a signal?
 
 
 
 

Question 4 of 7

5. Which of the following neurotransmitters is associated with inhibition exclusively?
 
 
 
 

Question 5 of 7

6. Critical Thinking: If a postsynaptic cell has synapses from five different cells, and three cause EPSPs and two of them cause IPSPs, give an example of a series of depolarizations and hyperpolarizations that would result in the neuron reaching threshold.

Question 6 of 7

7. Critical Thinking: Why is the receptor the important element determining the effect a neurotransmitter has on a target cell?

Question 7 of 7