Human Physiology/The Nervous System

Review Questions

Answers for these questions can be found here

1. The junction between one neuron and the next, or between a neuron and an effector is called:

A ) A synapse

B ) A dendrite

C ) A neuotransmitter

D ) A ventricle

E ) None of the above

2. A fast excitatory synapses follows this order:

A ) (1) neurotransmitter released (2) diffused across the synaptic cleft to a receptor protein (3) binding of the

transmitter opens pores in the ion channels and positive ions move in.

B ) (1) neurotransmitter released (2) diffused across the synaptic cleft to a receptor protein (3) binding of the

transmitter opens pores in the ion channels and negative ions move in.

C ) (1) neurotransmitter released (2) diffused across the synaptic cleft to a receptor amino acid (3) binding of

the transmitter opens pores in the ion channels and positive ions move in.

D ) (1) diffused across the synaptic cleft to a receptor protein (2) neurotransmitter released (3) binding of the

transmitter opens pores in the ion channels and positive ions move in.

E ) None of the above

3. Resting potential is

A ) excess positive ions accumulate inside the plasma membrane

B ) excess negative ions accumulate inside the plasma membrane

C ) excess positive ions accumulate outside the plasma membrane

D ) both b & c

E ) both a & c

4. Sensory neurons have:

A ) A short dendrite and a long axon

B ) A short dendrite and a short axon

C ) A long dendrite and a short axon

D ) A long dendrite and a long axon

E ) Their axons and dendrites may be either long or short

5. ________blocks Acetylcholine receptor sites causing muscle relaxation.

A ) Novocain

B ) curare

C ) Nicotine

D ) Nerve gases

6. Transmission across a synapse is dependent on the release of _______?

A ) neurotransmitters

B ) synaptic vesicle

C ) neurons

D ) receptor proteins

Human Physiology/The Nervous System