Answers2026-2027 EDGE Human Anatomy and Physiology BIntroduction

Introduction 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

can result from interruption of blood flow to the brain.

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4

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5

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

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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

can result when the brain is shaken violently. means loss of control of both the arms and the legs. can result from interruption of blood flow to the brain.

Answers:
Selection 1:Concussion
Selection 2:Quadriplegia
Selection 3:Stroke
11

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 . is caused by the body attacking its own nervous system and can lead to paralysis. can result from inadequate blood flow to the nerves due to damaged blood vessels.

Answers:
Selection 1:carpal tunnel syndrome
Selection 2:Guillain–Barré syndrome
Selection 3:Diabetic neuropathy
12

Label the following statements as characteristics of the central or peripheral nervous systems: The consists of the brain and spinal cord. The provides sensation in the fingers and toes. In the , messages pass between the brain and spinal cord. The sends information from the senses to the brain.

Answers:
Selection 1:CNS
Selection 2:PNS
Selection 3:CNS
Selection 4:PNS
13

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.
14

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
15

Label the following statements as characteristics of the central or peripheral nervous systems: A bee stings your finger, and the sensory receptors in the produce a pain signal. The message of this pain travels up your arm. The is predominantly at work. Your brain receives and interprets the pain message. The is predominantly at work. You think about pulling the bee stinger out of your finger. The is predominantly at work. You move your other hand, lifting it to your finger to pull the stinger out. The system is predominantly at work.

Answers:
Selection 1:PNS
Selection 2:PNS
Selection 3:CNS
Selection 4:CNS
Selection 5:PNS
16

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Answer not available
17

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.
18

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
19

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

A
bone
B
cerebrospinal fluid
C
muscle
D
meningeal layers
20

Which of the following parts of the body are involved in the peripheral nervous system? Select all that apply.

A
cranial nerves
B
spinal nerves
C
nerves
D
ganglia
E
plexuses

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