Question 1

What is the functional classification of neurons that are entirely contained within the brain or spinal cord?

Accepted Answer

A)   Motor neurons
B)   Interneurons
C)   Sensory neuronsD) None of the above
E) All of the above

Question 2

Efferent neurons carry impulses from the central nervous system to effectors.

Accepted Answer

A) True 
 B)False

Question 3

What happens when the measured potential of a membrane reaches threshold?

Accepted Answer

A)   Potassium rapidly enters the cell.
B)   Potassium rapidly leaves the cell.
C)   Sodium rapidly enters the cell.
D)   Sodium rapidly leaves the cell.E) B) and C)
F) All of the above

Question 4

What state is caused by unequal distribution of positive and negative charges across the plasma membrane of a neuron?

Accepted Answer

A)   Neutralization
B)   Neuralation
C)   Polarization
D)   PotentiationE) B) and C)
F) A) and C)

Question 5

What is the function of the reticular formation?

Accepted Answer

A)   Stimulates cortical wakefulness
B)   Inhibits involuntary muscle movement
C)   Stimulates protein synthesisby the rough endoplasmic reticulum
D)   Stimulates voluntary muscle movementE) None of the above
F) B) and C)

Question 6

In order to prevent a patient from experiencing pain, a local anesthetic is injected around sensory neurons to prevent an action potential. How does a local anesthetic work?

Accepted Answer

A)   It inhibits the release of acetylcholine.
B)   It binds to and prevents the opening of potassium channels.
C)   It binds to and prevents the opening of sodium channels.
D)   It binds to and opens calcium channels.E) All of the above
F) A) and D)

Question 7

Interneurons are specialized to carry impulses from peripheral receptors into the brain or spinal cord.

Accepted Answer

A) True 
 B)False

Question 8

The __________ root of a spinal nerve consists of axons of motor neurons.

Accepted Answer

The answer of The __________ root of a spinal nerve...

Question 9

Brain damage to the temporal lobe, where recent memory is processed, can result in the inability to form long-term memory.

Accepted Answer

A) True 
 B)False

Question 10

What is the first component of a reflex arc?

Accepted Answer

A)   Effector
B)   Receptor
C)   Central nervous system
D)   InterneuronE) B) and D)
F) A) and B)

Question 11

Which glial cells are found in the central nervous system and function to phagocytize bacterial cells and cellular debris?

Accepted Answer

A)   Astrocytes
B)   Ependymalcells
C)   Oligodendrocytes
D)   Microglia
E)   Schwann cellsF) C) and E)
G) C) and D)

Question 12

In most neurons, what is the approximate threshold potential?

Accepted Answer

A)   - 55 mV
B)   - 100 mV
C)   + 25 mV
D)   + 30 mVE) A) and D)
F) None of the above

Question 13

What structure is a complex network of tiny islands of gray matter in the brain that "awakens" the cerebral cortex?

Accepted Answer

A)   Dentate nucleus
B)   Reticular formation
C)   Limbic system
D)   Corpora quadrigemina
E)   CerebellumF) B) and D)
G) A) and E)

Question 14

The pressure of cerebrospinal fluid is usually measured by introducing a hollow needle between lumbar vertebrae into the __________.

Accepted Answer

A)   dura mater
B)   pia mater
C)   arachnoid mater
D)   subarachnoid space
E)   epidural spaceF) A) and D)
G) A) and E)

Question 15

Which of the following are the cellular processesof neurons that provide receptive surfaces for input from other neurons?

Accepted Answer

A)   Neurofibrils
B)   Nissl fibers
C)   Axons
D)   Dendrites
E)   NucleiF) A) and B)
G) All of the above

Question 16

What type of neurons are only found in specialized parts of the eyes, nose, and ears?

Accepted Answer

A)   Bipolar neurons
B)   Unipolar neurons
C)   Multipolar neurons
D)   Motor neuronsE) A) and D)
F) A) and C)

Question 17

A __________ is defined as a rapid automatic response to a stimulus.

Accepted Answer

A)   reaction
B)   prediction
C)   reflex
D)   symptomE) All of the above
F) A) and B)

Question 18

Considered the emotional brain, what part of the brain controls emotional experience and expression?

Accepted Answer

A)   Reticular activating system
B)   Limbic system
C)   Nuclei of the hypothalamus
D)   Optic chiasmaE) A) and B)
F) None of the above

Question 19

A nerve is a single neuron.

Accepted Answer

A) True 
 B)False

Question 20

Which glial cells provide structural support between neurons and blood vessels, have numerous processes, and help regulate extracellular nutrient and ion concentrations?

Accepted Answer

A)   Astrocytes
B)   Ependymalcells
C)   Oligodendrocytes
D)   Microglia
E)   Schwann cellsF) B) and C)
G) D) and E)

Exam 9: Nervous System

Considered the emotional brain, what part of the brain controls emotional experience and expression?

Correct AnswerverifiedShow Answer

What is the function of the reticular formation?

Correct AnswerverifiedShow Answer

Interneurons are specialized to carry impulses from peripheral receptors into the brain or spinal cord.

Correct AnswerverifiedShow Answer

Brain damage to the temporal lobe, where recent memory is processed, can result in the inability to form long-term memory.

Correct AnswerverifiedShow Answer

What structure is a complex network of tiny islands of gray matter in the brain that "awakens" the cerebral cortex?

Correct AnswerverifiedShow Answer

The __________ root of a spinal nerve consists of axons of motor neurons.

Correct AnswerverifiedShow Answer

Which glial cells are found in the central nervous system and function to phagocytize bacterial cells and cellular debris?

Correct AnswerverifiedShow Answer

What is the functional classification of neurons that are entirely contained within the brain or spinal cord?

Correct AnswerverifiedShow Answer

In order to prevent a patient from experiencing pain, a local anesthetic is injected around sensory neurons to prevent an action potential. How does a local anesthetic work?

Correct AnswerverifiedShow Answer

What type of neurons are only found in specialized parts of the eyes, nose, and ears?

Correct AnswerverifiedShow Answer

The pressure of cerebrospinal fluid is usually measured by introducing a hollow needle between lumbar vertebrae into the __________.

Correct AnswerverifiedShow Answer

Which glial cells provide structural support between neurons and blood vessels, have numerous processes, and help regulate extracellular nutrient and ion concentrations?

Correct AnswerverifiedShow Answer

Efferent neurons carry impulses from the central nervous system to effectors.

Correct AnswerverifiedShow Answer

What happens when the measured potential of a membrane reaches threshold?

Correct AnswerverifiedShow Answer

A nerve is a single neuron.

Correct AnswerverifiedShow Answer

In most neurons, what is the approximate threshold potential?

Correct AnswerverifiedShow Answer

What state is caused by unequal distribution of positive and negative charges across the plasma membrane of a neuron?

Correct AnswerverifiedShow Answer

What is the first component of a reflex arc?

Correct AnswerverifiedShow Answer

Which of the following are the cellular processesof neurons that provide receptive surfaces for input from other neurons?

Correct AnswerverifiedShow Answer

A __________ is defined as a rapid automatic response to a stimulus.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified