Nervous System Quiz

What is the basic element of the nervous system?

• Neuron

• Cell body

• Dendrite

• Axon

What are the three main parts of a neuron?

• Cell body, dendrites, axon

• Nucleus, mitochondria, ribosome

• Cell wall, chloroplast, vacuole

• Cytoplasm, membrane, lysosome

Which part of the neuron has branches or fibers that reach out to send or receive impulses?

• Cell body

• Axon

• Dendrite

• Myelin sheath

What are the thin, branching extensions of the cell body that conduct nerve impulses toward the cell body?

• Dendrites

• Axons

• Myelin sheaths

• Synapses

Which part of the neuron conducts nerve impulses away from the cell body?

• Axon

• Dendrite

• Cell body

• Myelin sheath

What is the protective sheath that covers the axon called?

• Myelin sheath

• Cell membrane

• Synaptic cleft

• Cytoskeleton

What prevents the nerve from transmitting impulses in the wrong direction?

• Myelin sheath

• Dendrites

• Cell body

• Axon

What is the function of dendrites in a neuron?

• Conduct nerve impulses toward the cell body

• Conduct nerve impulses away from the cell body

• Protect the axon

• Store neurotransmitters