The Nervous System Answers

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The diagram shows a nerve cell.

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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
3

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.
4

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
5

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.
6

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
7

Which is a function performed by the central nervous system (CNS)? Select all that apply.processing information that is received from the stimuli receptorsreceiving stimuli and making the body react to those stimulisending out information so that the body can react appropriately to stimulicoordinating reflexes and reactions to stimulisensing stimuli and causing reactions in the body

A
processing information that is received from the stimuli receptors
B
receiving stimuli and making the body react to those stimuli
C
sending out information so that the body can react appropriately to stimuli
D
coordinating reflexes and reactions to stimuli
E
sensing stimuli and causing reactions in the body
8

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
9

Which structure(s) are connected to the peripheral nervous system? Select all that apply.a vertebral columna sense organa musclea glanda bone

A
a vertebral column
B
a sense organ
C
a muscle
D
a gland
E
a bone
10

What happens to the body when motor neurons are injured?

A
It releases more neurotransmitters.
B
It loses muscle movement.
C
It experiences increased stimuli.
D
It shows a decrease in inflammation.

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