1.How many neurons are there in the average human brain?

10 million

100 million

1 billion

100 billion

2.Which neurotransmitter is most affected by alcohol?

Serotonin

GABA

Dopamine

Acetylcholine

3.When an action potential occurs in a neuron, the afterhyperpolarization is caused by:

A burst of activity of the Na+/K+ pump

Inhibition of the Na+/K+ pump

Increased permeability of the cell membrane to K+

Increased permeability of the cell membrane to Na+

4.What is the only sense not to be relayed through the thalamus?

Taste

Sight

Smell

Touch

5.The output of the basal ganglia is:

Inhibitory

A mix of excitatory and inhibitory

Excitatory

The basal ganglia only receive input and do not send output to the rest of the brain

6.Alan Hodgkin and Andrew Huxley first described their model of how action potentials are formed and propagated in:

1945

1952

1960

1968

7.The brain is 2% of the body’s weight but uses what percent of the body’s energy?

5%

10%

20%

45%

8.A positive Babinski sign, with upward movement of the big toe and fanning downward of the other toes, is a sign that a lesion has occurred where?

Corticospinal tract

Corticobulbar tract

Cerebellum

Vestibulospinal tract

9.If a person’s brain is giving off alpha waves, that person is most likely:

Asleep

Awake and resting

Awake and nervous

Unconscious

10.The neurologist who divided the brain into 52 areas based on cytoarchitecture was:

Ramon y Cajal

Thomas Willis

Carl Wernicke

Korbinian Brodmann

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