Human Anatomy and Physiology practice questions

Question 1

Which of the following is NOT a function of neurons?

Accepted Answer

forming the myelin sheath

Answer

transmitting motor information

Answer

integration

Answer

carrying sensory information

Question 2

Myelinated axons in the CNS are known as:

Accepted Answer

white matter.

Answer

dark matter.

Answer

black matter.

Answer

gray matter.

Question 3

What ion triggers synaptic vesicles to release neurotransmitters into the synaptic cleft?

Accepted Answer

calcium

Answer

magnesium

Answer

chlorine

Answer

sodium

Question 4

Voltage-gated sodium channels are activated:

Accepted Answer

only if the cell is depolarized to threshold.

Answer

after voltage-gated potassium channels are activated.

Answer

during repolarization.

Answer

during hyperpolarization.

Question 5

Which nervous system division is responsible for the integration of sensory information?

Accepted Answer

central nervous system

Answer

somatic motor division

Answer

visceral motor division

Answer

peripheral nervous system

Question 6

Which statement best describes the all-or-none principle?

Accepted Answer

An action potential happens completely, or it doesn't happen at all.

Answer

Local, or graded, potentials will always become action potentials.

Answer

All voltage-gated sodium channels will open or none will open.

Answer

All neurons conduct an action potential together, or none do.

Question 7

The influx of positive charges makes the membrane potential more positive and is known as:

Accepted Answer

depolarization.

Answer

polarization.

Answer

hyperpolarization.

Answer

repolarization.

Question 8

The two anatomical divisions of the nervous system are the:

Accepted Answer

central nervous system and peripheral nervous system.

Answer

somatic sensory division and visceral sensory system.

Answer

sensory division and motor division.

Answer

visceral motor division and somatic motor division.

Question 9

What would most likely lead to an IPSP?

Accepted Answer

opening of potassium ion channels

Answer

opening of sodium ion channels

Answer

opening of calcium ion channels

Answer

closure of chloride ion channels

Question 10

The hypothalamus functions in:

Accepted Answer

regulating the autonomic nervous system.

Answer

coordinating movement.

Answer

sending information to the cerebral cortex.

Answer

secreting a hormone called melatonin.

Human Anatomy and Physiology practice questions

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Human Anatomy and Physiology practice questions

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