Brain Quiz

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

10 million

100 million

1 billion

100 billion

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* 2. Which neurotransmitter is most affected by alcohol?

Serotonin

GABA

Dopamine

Acetylcholine

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* 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+

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

Taste

Sight

Smell

Touch

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* 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

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

1945

1952

1960

1968

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

10%

20%

45%

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* 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

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

Asleep

Awake and resting

Awake and nervous

Unconscious

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

Ramon y Cajal

Thomas Willis

Carl Wernicke

Korbinian Brodmann

Brain Quiz

Question Title

Question Title

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

Question Title

* 2. Which neurotransmitter is most affected by alcohol?

Question Title

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

Question Title

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

Question Title

* 5. The output of the basal ganglia is:

Question Title

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

Question Title

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

Question Title

* 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?

Question Title

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

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

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* 11. Bonus question (worth 1 correct answer): offer us one suggestion for improving the Active Zone newsletter:

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* 12. Enter your e-mail address for a chance to win a Cell Coloring Book!