Answers2026-2027 EDGE Human Anatomy and Physiology BIntroduction

The Nervous System Answers

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1
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The nervous system is

A
a system for supporting the body’s structure.
B
a system for circulating blood throughout the body.
C
a network that carries messages between the brain and the rest of the body.
D
a network of glands that secrete hormones.
2
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From the choices below, select the activities for which the nervous system is responsible.

A
digesting food to produce energy
B
quickly moving your hand off of a hot stove
C
feeling pain
D
identifying an odor
3

ConcussionQuadriplegia ✔ StrokeParaplegia can result from interruption of blood flow to the brain.

A
Concussion
B
Quadriplegia
C
✔ Stroke
D
Paraplegia
4

The CNS✔ PNS sends information from the senses to the brain.

A
CNS
B
✔ PNS
5

You move your other hand, lifting it to your finger to pull the stinger out. The CNS✔ PNS system is predominantly at work.

A
CNS
B
✔ PNS
6

Neurons are

A
cells that produce sweat.
B
cells that help digest dead glial cells.
C
cells that consist of a dendrite, axon, and axon terminal.
D
the location of DNA in a cell.
7

What are the characteristics of the central nervous system? Select all that apply.

A
It is made up of the brain and spinal cord.
B
It is a system of bones that supports the body.
C
It uses the spinal cord as a pathway to transmit messages to the PNS.
D
It contains networks of nerves called plexuses.
8

Why is it important for the brain and spinal cord to be protected? Select all that apply.

A
because the spinal cord supports the body and keeps humans standing upright
B
because the brain and spinal cord are delicate
C
because the brain and spinal cord are important centers of communication for the entire body
D
because damage to the brain and spinal cord affects other parts of the body
9

Which of the following statements describes the PNS?

A
It is responsible for passing messages through the brain stem.
B
It is responsible for gathering information using sensory receptors.
C
It works independently of the central nervous system.
D
It consists of bundles of neurons called tracts.
10

Label the following statements as characteristics of the central or peripheral nervous systems:

Answers:
produce a pain signal.:PNS
is predominantly at work.:PNS
is predominantly at work.:CNS
is predominantly at work.:CNS
system is predominantly at work.:PNS
11

✔ ConcussionQuadriplegia StrokeParaplegia can result when the brain is shaken violently.

Answers:
can result when the brain is shaken violently.:Concussion
means loss of control of both the arms and the legs.:Quadriplegia
can result from interruption of blood flow to the brain.:Stroke
12

A person who types at a computer for several hours a day can be at higher risk of damaging the nerve in her wrist, leading to ✔ carpal tunnel syndromeGuillain–Barré syndromediabetic neuropathy.

Answers:
.:carpal tunnel syndrome
is caused by the body attacking its own nervous system and can lead to paralysis.:Guillain–Barré syndrome
can result from inadequate blood flow to the nerves due to damaged blood vessels.:Diabetic neuropathy
13

Label the following statements as characteristics of the central or peripheral nervous systems:

Answers:
consists of the brain and spinal cord.:CNS
provides sensation in the fingers and toes.:PNS
, messages pass between the brain and spinal cord.:CNS
sends information from the senses to the brain.:PNS
14

What are the differences between a motor and sensory pathway? Select all that apply.

A
A motor pathway uses neurotransmitters, while a sensory pathway does not.
B
A motor pathway takes instruction from the brain, while a sensory pathway takes information to the brain.
C
A sensory pathway takes instruction from the brain, while a motor pathway takes information to the brain.
D
A motor pathway triggers motion, while a sensory pathway passes information from the senses.
15

What types of messages are transmitted along autonomic pathways?

A
information from the senses being directed back to the brain
B
messages from the brain stimulating muscle movement
C
messages that control the glands and organs in the body
D
messages from the spinal cord resulting in muscle reflexes
16

Label the following statements as characteristics of the central or peripheral nervous systems:

Answers:
produce a pain signal.:PNS
is predominantly at work.:PNS
is predominantly at work.:CNS
is predominantly at work.:CNS
system is predominantly at work.:PNS
17

Select the statements that describe brain injuries.

A
Brain injuries only affect the brain.
B
Brain injuries can occur when the brain’s oxygen or glucose supply is interrupted.
C
Brain injuries can only be caused by physical trauma.
D
Brain injuries can be caused by infection or intoxication.
18

Glial cells are

A
cells that support neurons.
B
cells that produce sweat.
C
cells that transmit messages.
D
cells that sometimes attack the nervous system.
19

Which of the following are parts of the central nervous system? Select all that apply.

A
the feet
B
the spinal cord
C
the brain
D
the cerebrum
E
the cerebellum
F
the nose
20

What are the different layers that protect the brain and spinal cord?

A
bone
B
cerebrospinal fluid
C
muscle
D
meningeal layers

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