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2. What are the two major types of cells in the nervous system called?
A) Schwann cells and glial cells
B) neurons and glial cells
C) Schwann cells and mitochondria
D) mitochondria and neurons

3. Which of the follwing statements about a neuron is incorrect?
A) It has long thin fibers extending from the cell body
B) It has an excitable surface membrane
C) It uses cytoplasm to communicate with other cells
D) It contains mitochondria

4. What is the part of the neuron that carries the signals away from the soma?
A) axon
B) dendrite
C) transmitter
D) synapse

5. What is the part of the neuron that receives signals from other neurons?
A) The receptor cells
B) The cell body
C) The axon
D) The dendrites

6. The neuron's membrane is selectively permeable. This means that:
A) the membrane will let particles through only when it is depolarized
B) some substances, but not others, can pass through the membrane
C) the membrane will allow only a specific ratio of sodium to potassium to cross
D) the interior of the neuron is posititively charged and attracted to negatively charged exterior

7. Inside the synaptic vesicles of a neuron are:
A) myelin
B) neurotransmitters
C) dendrites
D) mitochondria

8. Where are the synaptic vesicles located?
A) in an axon
B) in a cell body
C) in a dendrite
D) in a synapse

9. The BEST analogy for a neurotransmitter and its receptor is:
A) room, and the building in which it is located
B) door and the room to which it leads
C) key and the lock it fits
D) lock and the door to which it is attached

10. The postsynaptic cell has receptors on its dendrites that:
A) carry action potentials
B) recognize only one type of neurotransmitter
C) convey electrochemical impulses
D) allow sodium ions to enter the cell

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