AnswersGA-Essentials of HealthcareThe Brain and Spinal Cord

The Brain and Spinal Cord — Unit test Answers

21 verified answers
1
Free Preview

Which type of nerve creates a “mental map” of the relative positioning of the body at any given point in time?

A
gamma nerve fibers
B
delta nerve fibers
C
beta nerve fibers
D
alpha nerve fibers
2
Free Preview

The central nervous system is responsible for many functions, including

A
detecting temperatures and textures of the environment around the body.
B
digesting food and determining where water is needed.
C
contracting muscles when the body is suddenly struck by an outside object.
D
regulating the sleep cycle, breathing rate, and body temperature.
3

The two primary functions of the skull are to protect the brain and to

A
form the structure of the face and head.
B
serve as the hub of the nervous system.
C
link the brain and the rest of the nervous system.
D
protect the other parts of the nervous system.
4

Which comparison is correct?

A
The spinal cord is like a highway, and the nerves are like the roads that branch off the highway.
B
The spinal cord is like an information center, and the nerves are like the news broadcasts from it.
C
The spinal cord is like the insulation inside a wall, and the nerves are like the outer shell of the wall.
D
The spinal cord is like a power generator, and the nerves are like the power lines connected to it.
5

The structures in humans that provide the ability to detect pain and therefore keep the body safe are called

A
chemosensors.
B
nociceptors.
C
photoreceptors.
D
thermoreceptors.
6

Ore is feeling cold, and he is clenching his fists together to stay warmer. He then releases his grip a little bit because he feels that it is too tight. Which two particular sensory receptors are activated through this experience?

A
proprioceptors and mechanoreceptors
B
thermoreceptors and mechanoreceptors
C
mechanoreceptors and nociceptors
D
nociceptors and proprioceptors
7

Which stimulus would generate a response from the somatosensory system?

A
hearing a baby’s cry
B
smelling a skunk
C
tasting a sour apple
D
touching a hot pan
8

Which receptors are involved in detecting a hot pan and the resulting feeling of pain?

A
mechanoreceptors and photoreceptors
B
nociceptors and thermoreceptors
C
photoreceptors and nociceptors
D
mechanoreceptors and thermoreceptors
9

How do cranial nerves transmit information to the senses?

A
They transmit directly between the brain and the sense organs.
B
They transmit through the spinal cord to the sense organs.
C
They transmit to spinal nerves, which then transmit to the sense organs.
D
They transmit directly between one sense organ and another.
10

The structure located in the nasal cavity that receives aromatic substances is the

A
retina.
B
tympanic membrane.
C
taste bud.
D
olfactory bulb.
11

Which is a difference between the general visceral motor nerves and the special visceral motor nerves?

A
Special visceral motor nerves control involuntary muscle function throughout the body, while general visceral motor nerves control the involuntary function of muscles in internal organs.
B
General visceral motor nerves control involuntary muscle function throughout the body, while special visceral motor nerves control the involuntary function of muscles in internal organs.
C
Special visceral motor nerves receive information through receptors, whereas general visceral motor nerves must make a connection with muscle fibers through the motor endplate.
D
General visceral motor nerves receive information through receptors, whereas special visceral motor nerves must make a connection with muscle fibers through the motor endplate.
12

Which statement regarding the layers of a nerve is true?

A
The epineurium is the middle layer of tissue that further protects the nerve fiber and allows blood to supply the nerve.
B
The fascicles surround the endoneurium and are often called nerve fibers.
C
The perineurium is the outermost layer of thin tissue that surrounds fascicles and provides additional protection.
D
The endoneurium is the innermost layer of tissue that surrounds the axons.
13

Miriam is a logical thinker who can solve mathematical problems, but she is not good at remembering faces or tunes. What might explain this?

A
The northern hemisphere of her brain is stronger than the southern hemisphere of her brain.
B
The southern hemisphere of her brain is stronger than the northern hemisphere of her brain.
C
The left hemisphere of her brain is stronger than the right hemisphere of her brain.
D
The right hemisphere of her brain is stronger than the left hemisphere of her brain.
14

The autonomic nervous system is the part of the peripheral nervous system that is responsible for

A
skeletal muscle movement.
B
involuntary bodily functions, such as sweating.
C
light, sound, taste, and smell detection.
D
new cell development.
15

Mario hears his brother open the door, so he turns toward the door to say hello. Which best describes the signals moving through Mario’s nervous system to make him react and turn around?

A
The sensory nervous system sends a signal to the central nervous system, then the brain sends a signal to the somatic nervous system.
B
The autonomic nervous system sends a signal to the central nervous system, then the brain sends a signal to the sensory nervous system.
C
The sensory nervous system sends a signal to the peripheral nervous system, then the brain sends a signal to the autonomic nervous system.
D
The autonomic nervous system sends a signal to the peripheral nervous system, then the brain sends a signal to the somatic nervous system.
16

Which sends information from other parts of the body all the way to the brain?

A
neuroreceptors
B
sensory neurons
C
sensory receptors
D
neural pathways
17

The following image highlights the primary motor cortex and how it relates to controlling muscle movement.What best describes how the structure of the brain relates to different body functions?

Question illustration
A
Different sections of the brain are capable of performing every function but will only control one at a time.
B
Many different sections of the brain are responsible for different functions, and some sections have more specific functions than others.
C
There are three parts of the brain, and within each part, every section works on the exact same functions.
D
Every part of the brain is integrated with others so that every section must be working in order for any body function to occur.
18

What is true about all neurons?

A
They are bundled together in nerves that are surrounded by a protective sheath.
B
They all transmit signals through axons and receive neurotransmitters through dendrites.
C
They each bring nutrients to the brain and produce a fatty protective layer called myelin.
D
They all send signals from the brain to the body through long axons in the vertebral column.
19

When the brain receives the message that the environment around the body is very cold, the temperature signal begins in neurons of the

A
somatic nervous system.
B
sensory nervous system.
C
autonomic nervous system.
D
central nervous system.
20

Which region of the brain produces emotions, processes feelings of pleasure and pain, and triggers feelings of hunger and thirst?

A
the limbic system
B
the basal ganglia
C
the cerebral cortex
D
the occipital lobe

Did you find these answers helpful?

More from this Course

Quiz
25 verified answers

Unit Test

Quiz
25 verified answers

Unit Test

Quiz
21 verified answers

Unit Test