The Nervous System Answers

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1
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Which statement best describes the central nervous system?

A
It senses stimuli and carries out a reaction.
B
It secretes hormones.
C
It is made up of all nerve cells.
D
It is made up of the brain and the spinal cord.
2
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Examine the words.impulse, presynaptic cell, neurotransmitters, receptors, postsynaptic cellWhat idea can be described using all the words listed?

A
the difference between the somatic and autonomic nervous systems
B
the transfer of information from one neuron to another
C
the difference between the central and peripheral nervous systems
D
the flow of information within a neuron
3

Which structure is at work when the body deals with reflex actions?

A
the heart
B
the brain stem
C
the vertebral column
D
the spinal cord
4

Which is a function of the central nervous system?

A
pumping blood through the body
B
controlling coordination in the body
C
fighting bacteria that enter the body
D
breaking down carbohydrates in the body
5

Which is an example of when Hector's somatic sensory system is in control?

A
After a long run, his body is sweating.
B
When jogging, he sees an ice patch and decides to change directions to a different route.
C
His eyes dilate because he sees something scary.
D
He eats a large meal and his body takes multiple hours to digest it.
6

Which function does a neuron perform in a human body?

A
It generates electrochemical signals so that the body can react to stimuli.
B
It produces antibodies to destroy pathogens for protection purposes.
C
It breaks down chemical substances into a form that is usable by the body.
D
It delivers oxygen to the cells of the body for metabolic processes.
7

Which autonomic system is most likely to be dominant while someone is experiencing stress about an upcoming job interview?

A
the peripheral nervous system
B
the sympathetic nervous system
C
the somatic nervous system
D
the parasympathetic nervous system
8

Which is an example of how the peripheral nervous system helps the body maintain its internal environment?

A
Muscles produce keratin so that hair can grow stronger.
B
Sweat glands break down the food that is consumed.
C
Muscles contract rapidly to produce heat on a cold day.
D
The brain recalls information to help take a test.
9

When Brian touches a hot object, which body structures help him react appropriately to protect himself?

A
the sensory neurons, the brain, and the motor neurons
B
the sensory neurons, the vertebral column, and the brain
C
the sensory neurons, the interneurons, and the motor neurons
D
the vertebral column, the interneurons, and the motor neurons
10

The sympathetic and parasympathetic nervous systems are both part of which division of the nervous system?

A
the central nervous system
B
the peripheral nervous system
C
the somatic nervous system
D
the autonomic nervous system

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