Question 1

In the axon, the nerve impulses travel

Accepted Answer

A)  toward the cell body. 
B)  away from the cell body. 
C)  bidirectionally toward and away from the cell body. 
D)  away from the synapse. 
E)  toward the dendrites. 
A)  toward the cell body. 
B)  away from the cell body. 
C)  bidirectionally toward and away from the cell body. 
D)  away from the synapse. 
E)  toward the dendrites.

Question 2

Why does the primary somatosensory area have a larger section dedicated to the fingers and hand, than to the feet and toes?

Accepted Answer

A)  We take in more sensory information with our fingers and hands.. 
B)  The fingers and hand are above the spinal cord termination, while the feet and toes are below it. 
C)  The feet and toes require more motor area so they get less somatosensory area. 
D)  The feet and toes are not innervated. 
E)  The fingers and hand do not have motor area sections, so they are controlled by the somatosensory area. 
A)  We take in more sensory information with our fingers and hands.. 
B)  The fingers and hand are above the spinal cord termination, while the feet and toes are below it. 
C)  The feet and toes require more motor area so they get less somatosensory area. 
D)  The feet and toes are not innervated. 
E)  The fingers and hand do not have motor area sections, so they are controlled by the somatosensory area.

Question 3

Which description best fits the peripheral nervous system (PNS)?

Accepted Answer

A)  nerves that carry sensory messages to the CNS and motor commands to the muscles and glands 
B)  nerves that carries motor commands to the CNS and sensory messages to the muscles and glands 
C)  consists of the brain and spinal cord, located in the midline of the body 
D)  consists of the brain and spinal cord, located on the peripheral aspect of the body 
E)  None of the answer choices is a description of the peripheral nervous system. 
A)  nerves that carry sensory messages to the CNS and motor commands to the muscles and glands 
B)  nerves that carries motor commands to the CNS and sensory messages to the muscles and glands 
C)  consists of the brain and spinal cord, located in the midline of the body 
D)  consists of the brain and spinal cord, located on the peripheral aspect of the body 
E)  None of the answer choices is a description of the peripheral nervous system.

Question 4

Myelin decreases the speed of nerve impulse conduction.

Accepted Answer

A) True 
 B)False

Question 5

Certain people have an inability to speak due to brain damage. The most likely area of the brain that has been damaged is

Accepted Answer

A)  Broca's area. 
B)  the meninges. 
C)  the ventricles. 
D)  the amygdala. 
E)  the limbic system. 
A)  Broca's area. 
B)  the meninges. 
C)  the ventricles. 
D)  the amygdala. 
E)  the limbic system.

Question 6

Which of the following is a function of the cerebellum?

Accepted Answer

A)  maintaining posture and balance 
B)  learning and memory 
C)  language and speech 
D)  receiving and relaying sensory input 
E)  commanding voluntary motor responses 
A)  maintaining posture and balance 
B)  learning and memory 
C)  language and speech 
D)  receiving and relaying sensory input 
E)  commanding voluntary motor responses

Question 7

Damage to your cerebellum could result in difficulties participating in activities like playing an instrument, or playing soccer.

Accepted Answer

A) True 
 B)False

Question 8

Consciousness is best associated with the

Accepted Answer

A)  whole brain. 
B)  frontal lobe only. 
C)  cerebral cortex. 
D)  whole central nervous system. 
E)  cerebellum. 
A)  whole brain. 
B)  frontal lobe only. 
C)  cerebral cortex. 
D)  whole central nervous system. 
E)  cerebellum.

Question 9

In a reflex arc, which of the following resides completely within the spinal column?

Accepted Answer

A)  interneurons 
B)  sensory neurons 
C)  receptors 
D)  motor neurons 
E)  effectors 
A)  interneurons 
B)  sensory neurons 
C)  receptors 
D)  motor neurons 
E)  effectors

Question 10

The sodium-potassium pump is primarily responsible for the

Accepted Answer

A)  resting potential. 
B)  action potential. 
C)  excretion of salts. 
D)  contraction of muscle fibers. 
E)  maintenance of isotonic water balance. 
A)  resting potential. 
B)  action potential. 
C)  excretion of salts. 
D)  contraction of muscle fibers. 
E)  maintenance of isotonic water balance.

Question 11

People claim that once you have learned to ride a bicycle you can always ride a bicycle, even if you haven't ridden for a long time. What type of memory is associated with this?

Accepted Answer

A)  short-term memory 
B)  episodic memory 
C)  semantic memory 
D)  long-term memory 
E)  skill memory 
A)  short-term memory 
B)  episodic memory 
C)  semantic memory 
D)  long-term memory 
E)  skill memory

Question 12

Most illicit drugs affect the action of the brain by interfering with the Na+-K+ pump and nerve impulses.

Accepted Answer

A) True 
 B)False

Question 13

When the dorsal root of a spinal nerve is cut

Accepted Answer

A)  the organism is killed. 
B)  incoming sensory nerve impulses are lost. 
C)  outgoing motor nerve impulses are lost. 
D)  incoming motor nerve impulses are lost. 
E)  impulses will cross over to the other side of the body. 
A)  the organism is killed. 
B)  incoming sensory nerve impulses are lost. 
C)  outgoing motor nerve impulses are lost. 
D)  incoming motor nerve impulses are lost. 
E)  impulses will cross over to the other side of the body.

Question 14

An action potential includes

Accepted Answer

A)  depolarization only. 
B)  repolarization only. 
C)  depolarization and repolarization. 
D)  resting potential and depolarization. 
E)  resting potential and repolarization. 
A)  depolarization only. 
B)  repolarization only. 
C)  depolarization and repolarization. 
D)  resting potential and depolarization. 
E)  resting potential and repolarization.

Question 15

The enzyme that breaks down acetylcholine on the postsynaptic membrane is

Accepted Answer

A)  acetylcholinesterase. 
B)  monoamine oxidase. 
C)  GABA. 
D)  lipase. 
E)  maltase. 
A)  acetylcholinesterase. 
B)  monoamine oxidase. 
C)  GABA. 
D)  lipase. 
E)  maltase.

Question 16

Which body part is associated with only the primary somatosensory area?

Accepted Answer

A)  genitals 
B)  pharynx 
C)  tongue 
D)  face 
E)  thumb 
A)  genitals 
B)  pharynx 
C)  tongue 
D)  face 
E)  thumb

Question 17

Which of the following is an accurate comparison of Alzheimer and Parkinson diseases?

Accepted Answer

A)  In both cases, the patient slowly loses memory and slowly drifts into inactivity. 
B)  In both cases, the patient becomes increasingly excited and overstimulated. 
C)  Patients with Alzheimer disease produce too much beta amyloid, while those with Parkinson produce too little dopamine. 
D)  Patients with Alzheimer disease produce too little beta amyloid, while those with Parkinson disease produce too little dopamine. 
E)  Patients with Alzheimer disease produce too much beta amyloid, while those with Parkinson disease produce too much dopamine. 
A)  In both cases, the patient slowly loses memory and slowly drifts into inactivity. 
B)  In both cases, the patient becomes increasingly excited and overstimulated. 
C)  Patients with Alzheimer disease produce too much beta amyloid, while those with Parkinson produce too little dopamine. 
D)  Patients with Alzheimer disease produce too little beta amyloid, while those with Parkinson disease produce too little dopamine. 
E)  Patients with Alzheimer disease produce too much beta amyloid, while those with Parkinson disease produce too much dopamine.

Question 18

What is the definition of learning?

Accepted Answer

A)  ability to retain and utilize past memories 
B)  ability to hold a thought in mind or recall events from the past 
C)  ability to forget unfavorable experiences 
D)  ability to store information 
E)  ability to retain and form memories 
A)  ability to retain and utilize past memories 
B)  ability to hold a thought in mind or recall events from the past 
C)  ability to forget unfavorable experiences 
D)  ability to store information 
E)  ability to retain and form memories

Question 19

A nerve is

Accepted Answer

A)  a neuron. 
B)  composed of sensory axons and motor dendrites. 
C)  composed of the long fibers of axons. 
D)  a part of the central nervous system. 
E)  any cell located in the brain or spinal region. 
A)  a neuron. 
B)  composed of sensory axons and motor dendrites. 
C)  composed of the long fibers of axons. 
D)  a part of the central nervous system. 
E)  any cell located in the brain or spinal region.

Question 20

The difference between a weak stimulus and an intense stimulus is

Accepted Answer

A)  a weak stimulus produces a weak action potential, while a strong stimulus produces a strong action potential. 
B)  a weak stimulus only opens sodium gates, while a strong stimulus opens both sodium and potassium gates. 
C)  an intense stimulus can cause an axon to start an axon potential more often in a given time interval than a weak stimulus. 
D)  a weak stimulus, unlike a strong stimulus, will not require repolarization. 
E)  an intense stimulus causes more sodium ions to diffuse into the cell. 
A)  a weak stimulus produces a weak action potential, while a strong stimulus produces a strong action potential. 
B)  a weak stimulus only opens sodium gates, while a strong stimulus opens both sodium and potassium gates. 
C)  an intense stimulus can cause an axon to start an axon potential more often in a given time interval than a weak stimulus. 
D)  a weak stimulus, unlike a strong stimulus, will not require repolarization. 
E)  an intense stimulus causes more sodium ions to diffuse into the cell.

Exam 17: Nervous System

In the axon, the nerve impulses travel

Why does the primary somatosensory area have a larger section dedicated to the fingers and hand, than to the feet and toes?

Which description best fits the peripheral nervous system (PNS)?

Myelin decreases the speed of nerve impulse conduction.

Certain people have an inability to speak due to brain damage. The most likely area of the brain that has been damaged is

Which of the following is a function of the cerebellum?

Damage to your cerebellum could result in difficulties participating in activities like playing an instrument, or playing soccer.

Consciousness is best associated with the

In a reflex arc, which of the following resides completely within the spinal column?

The sodium-potassium pump is primarily responsible for the

People claim that once you have learned to ride a bicycle you can always ride a bicycle, even if you haven't ridden for a long time. What type of memory is associated with this?

Most illicit drugs affect the action of the brain by interfering with the Na+-K+ pump and nerve impulses.

When the dorsal root of a spinal nerve is cut

An action potential includes

The enzyme that breaks down acetylcholine on the postsynaptic membrane is

Which body part is associated with only the primary somatosensory area?

Which of the following is an accurate comparison of Alzheimer and Parkinson diseases?

What is the definition of learning?

A nerve is

The difference between a weak stimulus and an intense stimulus is

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Most illicit drugs affect the action of the brain by interfering with the Na⁺-K⁺ pump and nerve impulses.