The Nervous System

Question 1

Use the drop-down menus to complete the sentence.

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✔ the brain; The central nervous system contains , which is the center of the nervous system, and , which coordinates simple reflexes.: the brain; The central nervous system contains , which is the center of the nervous system, and , which coordinates simple reflexes.: the spinal cord

Question 2

✔ the spinal cordglandsthe brainmuscles

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✔ the spinal cord

Question 3

cell body✔ axon terminalsdendrites

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✔ axon terminals

Question 4

Use the drop-down menus to complete the sentences about how neurons distribute information to the body.

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✔ dendrites; Information enters the neuron through the .: dendrites; Information passes through the to the axon.: cell body; Information leaves the neuron through the .: axon terminals

Question 5

Use the drop-down menus to complete the sentences.

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✔ presynaptic cell; The neuron that transmits the impulse is called the , and the cell receiving the impulse is called the .: presynaptic cell; The neuron that transmits the impulse is called the , and the cell receiving the impulse is called the .: postsynaptic cell; When a nerve impulse arrives at the axon terminal of the neuron, it triggers the release of molecules called . These molecules diffuse across the synapse and bind to receptors on the next cell.: neurotransmitters

Question 6

✔ postsynaptic cellpresynaptic cellmotor neuron

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✔ postsynaptic cell

Question 7

✔ neurotransmittersstimulineurons

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✔ neurotransmitters

Question 8

Which actions are functions of the somatic nervous system? Check all that apply.regulates involuntary activitiesincreases heart rate and blood pressurerelays information to and from internal organsstimulates digestionregulates voluntary activitiesrelays information to and from skin and skeletal muscles

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regulates voluntary activities; relays information to and from skin and skeletal muscles

Question 9

Which system prepares the body for the situation described in the scenario?

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the sympathetic nervous system

Question 10

Which is an example of a reflex?

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pulling your foot away after stepping on a sharp object

The Nervous System Answers

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