Question 1

At a chemical synapse, a(n) __________ is released to stimulate the effector membrane.

Accepted Answer

The answer of At a chemical synapse, a(n) __________ is...

Question 2

Which of the following is the nerve impulse event related to potassium ions?

Accepted Answer

A)   They depolarize the membrane by diffusing inward.
B)   They repolarize the membrane by diffusing outward.
C)   They maintain the membrane at resting potential.
D)   They open in the trigger zone of the neuron.
E)   They cause a local bioelectric current.F) A) and D)
G) B) and D)

Question 3

The time during which an excitable membrane cannot respond to further stimulation, regardless of the stimulus strength, is termed the absolute refractory period.

Accepted Answer

A) True 
 B)False  True

Question 4

Which of the following are not glial cells in the central nervous system?

Accepted Answer

A)   Ependymal cells
B)   Oligodendrocytes
C)   Satellite cells
D)   Microglia
E)   AstrocytesF) A) and E)
G) A) and D)

Question 5

Which of the following cells are also called neurolemmocytes?

Accepted Answer

A)   Ependymal cells
B)   Schwann cells
C)   Microglial cells
D)   Oligodendrocytes
E)   AstrocytesF) A) and B)
G) A) and C)

Question 6

Which of the following is true about changes in transmembrane potentials?

Accepted Answer

A)   They cannot alter the resting membrane potential.
B)   They can only produce an action potential.
C)   They can open chemically regulated channels.
D)   They can open voltage-regulated channels.
E)   They can only produce a local potential.F) A) and D)
G) D) and E)

Question 7

Mechanically regulated channels open or close in response to __________ distortion of the membrane surface.

Accepted Answer

The answer of Mechanically regulated channels open or close in...

Question 8

Which of the following are small phagocytic cells that engulf bacterial cells and cellular debris?

Accepted Answer

A)   Schwann cells
B)   Microglia
C)   Oligodendrocytes
D)   Ependymal cells
E)   AstrocytesF) None of the above
G) A) and C)

Question 9

Any shift from the resting potential toward 0 mV is called a depolarization.

Accepted Answer

A) True 
 B)False

Question 10

Any stimulus that opens a gated channel will produce a(n) __________ potential.

Accepted Answer

graded

Question 11

Which of the following is not a function of neuroglia?

Accepted Answer

A)   Conducting phagocytosis
B)   Producing components of myelin
C)   Providing structural frameworks
D)   Making up the perikaryon
E)   Producing cerebrospinal fluidF) B) and C)
G) B) and E)

Question 12

The two main parts of the motor division are the afferent and efferent divisions.

Accepted Answer

A) True 
 B)False

Question 13

The efferent division carries __________ commands to muscles and glands.

Accepted Answer

motor

Question 14

Larger axons are enclosed in myelin sheaths that originate from astrocytes.

Accepted Answer

A) True 
 B)False

Question 15

When intensive stimulation causes the resynthesis and transport mechanisms of acetylcholine to be unable to keep pace with demands for ACh, these events are called:

Accepted Answer

A)   synaptic fatigue.
B)   synaptic delay.
C)   synaptic terminal.
D)   synaptic transmission.
E)   axodendritic synapse.F) B) and E)
G) B) and C)

Question 16

Which of the following are also called amphicytes?

Accepted Answer

A)   Satellite cells
B)   Schwann cells
C)   Microglial cells
D)   Neurolemmocytes
E)   OligodendrocytesF) A) and C)
G) C) and D)

Question 17

When sodium channels are inactivating and potassium channels are open, it is known as:

Accepted Answer

A)   resting period.
B)   hyperpolarization.
C)   depolarization.
D)   absolute refractory period.
E)   repolarization.F) None of the above
G) A) and E)

Question 18

Which of the following neuron types is located in the retina of the eyes?

Accepted Answer

A)   Multipolar
B)   Tripolar
C)   Bipolar
D)   Unipolar
E)   AnaxonicF) B) and E)
G) A) and C)

Question 19

Cranial nerves are connected to the spinal cord.

Accepted Answer

A) True 
 B)False

Question 20

Myelin decreases the speed at which an action potential travels along the axon.

Accepted Answer

A) True 
 B)False

Exam 11: Neural Tissue

At a chemical synapse, a(n) __________ is released to stimulate the effector membrane.

Correct AnswerverifiedShow Answer

Which of the following is the nerve impulse event related to potassium ions?

Correct AnswerverifiedShow Answer

The time during which an excitable membrane cannot respond to further stimulation, regardless of the stimulus strength, is termed the absolute refractory period.

Correct AnswerverifiedTrue

Which of the following are not glial cells in the central nervous system?

Correct AnswerverifiedShow Answer

Which of the following cells are also called neurolemmocytes?

Correct AnswerverifiedShow Answer

Which of the following is true about changes in transmembrane potentials?

Correct AnswerverifiedShow Answer

Mechanically regulated channels open or close in response to __________ distortion of the membrane surface.

Correct AnswerverifiedShow Answer

Which of the following are small phagocytic cells that engulf bacterial cells and cellular debris?

Correct AnswerverifiedShow Answer

Any shift from the resting potential toward 0 mV is called a depolarization.

Correct AnswerverifiedShow Answer

Any stimulus that opens a gated channel will produce a(n) __________ potential.

Correct Answerverifiedgraded

Which of the following is not a function of neuroglia?

Correct AnswerverifiedShow Answer

The two main parts of the motor division are the afferent and efferent divisions.

Correct AnswerverifiedShow Answer

The efferent division carries __________ commands to muscles and glands.

Correct Answerverifiedmotor

Larger axons are enclosed in myelin sheaths that originate from astrocytes.

Correct AnswerverifiedShow Answer

When intensive stimulation causes the resynthesis and transport mechanisms of acetylcholine to be unable to keep pace with demands for ACh, these events are called:

Correct AnswerverifiedShow Answer

Which of the following are also called amphicytes?

Correct AnswerverifiedShow Answer

When sodium channels are inactivating and potassium channels are open, it is known as:

Correct AnswerverifiedShow Answer

Which of the following neuron types is located in the retina of the eyes?

Correct AnswerverifiedShow Answer

Cranial nerves are connected to the spinal cord.

Correct AnswerverifiedShow Answer

Myelin decreases the speed at which an action potential travels along the axon.

Correct AnswerverifiedShow Answer

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True

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graded

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motor

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