Nervous System Practice

What are nerve impulses?

• Visual messages

• Sound messages

• Electrical messages

What is the point where the axon of one neuron joins the cell body or dendron of another neuron called?

• Cytoplasm

• Mitochondria

• Nucleus

• Synapse

What is the ending of the axon called?

• Synaptic vesicle

• Synaptic knob

• Dendron

• Neurotransmitter

What stimulates the synaptic knob to release a chemical called neurotransmitter from synaptic vesicles?

• Nerve impulse

• Synaptic cleft

• Cell body

• Dendron

What diffuses across the synaptic cleft?

• Synaptic knob

• Axon

• Nerve impulse

• Neurotransmitter

What does the neurotransmitter stimulate in the next neuron?

• Synaptic cleft

• Cell body

• Synaptic vesicle

• Dendron

What generates a nerve impulse to continue with the transmission?

• Synaptic knob

• Neurotransmitter

• Cell body

• Dendron

What is the speed at which nerve impulses are transmitted along nerve fibers?

• Variable speed

• Low speed

• Medium speed

• High speed

Label the parts

d

e

f

g

c

b

a

Dendrite Tip

Axon Terminal/Tip

Nucleus

Dendrite

Axon

Synapse

Cell Body

​ (a)   are coming out of F. They are then entering the ​ (b)   on part D. The axon is surrounded by ​ (c)   and the spaces between that are called ​ (d)  

• Neurotransmitters
• receptors
• myelin
• nodes of Ranvier
• hormones
• lipids