Biology Test Neuroscience Fundamentals 1

Question 1

What is the basic functional unit of the nervous system?

Accepted Answer

Neuron

Answer

Glial cell

Answer

Synapse

Answer

Myelin sheath

Question 2

What is the function of the myelin sheath?

Accepted Answer

To insulate nerve fibers and speed up signal transmission

Answer

To generate nerve impulses

Answer

To connect neurons to muscles

Answer

To store neurotransmitters

Question 3

What happens at a synapse?

Accepted Answer

Chemical neurotransmitters transmit signals between neurons

Answer

Neurons physically touch each other

Answer

Blood flows between neurons

Answer

DNA is exchanged between cells

Question 4

Which part of the brain is responsible for voluntary movement?

Accepted Answer

Motor cortex (frontal lobe)

Answer

Occipital lobe

Answer

Temporal lobe

Answer

Brain stem

Question 5

What is a neurotransmitter?

Accepted Answer

A chemical messenger that transmits signals across synapses

Answer

A type of neuron

Answer

An electrical impulse

Answer

A brain structure

Question 6

What is neuroplasticity?

Accepted Answer

The brain's ability to reorganize and form new neural connections

Answer

The physical flexibility of brain tissue

Answer

The fixed structure of the adult brain

Answer

The growth of new brain cells only in children