Question 1

The glial cell that provides structural support and organization to the CNS is the

Accepted Answer

A)   astrocyte.
B)   ependymal cell.
C)   neurolemmocyte.
D)   microglial cell.
E)   oligodendrocyte.F) B) and E)
G) A) and D)

Question 2

Which is not a general function of the nervous system?

Accepted Answer

A)   Transporting materials throughout the body
B)   Collecting information
C)   Processing and evaluating information
D)   Responding to information
E)   No exceptions; all are general functions of the nervous system.F) A) and C)
G) A) and E)

Question 3

Glial cells help maintain the structure of synapses and they can modify neural transmission.

Accepted Answer

A) True 
 B)False

Question 4

Choose the answer that correctly lists, in chronological order, the events involved in synaptic transmission.
A: A nerve impulse reaches the synaptic knob.
B: Neurotransmitter molecules diffuse across the synaptic cleft.
C: A nerve impulse begins in the postsynaptic cell.
D: Neurotransmitter molecules bind to receptors in the postsynaptic cell.
E: A voltage change occurs in the postsynaptic cell.

Accepted Answer

A)   a, c, b, d, e
B)   a, b, e, d, c
C)   c, b, d, e, a
D)   a, b, d, e, c
E)   c, a, b, d, eF) A) and E)
G) C) and D)

Question 5

What do all glial cells have in common?

Accepted Answer

A)   They help to transmit the nerve signals.
B)   They transfer blood to the various neurons.
C)   They assist neurons in their respective functions.
D)   They all attack pathogens.
E)   They absorb extra blood and cerebrospinal fluid.F) B) and E)
G) A) and B)

Question 6

A nerve impulse travels fastest along ________ axons of ________ diameter.

Accepted Answer

A)   myelinated, small
B)   unmyelinated, small
C)   myelinated, large
D)   unmyelinated, largeE) All of the above
F) A) and D)

Question 7

The slowest category of nerve fibers are the

Accepted Answer

A)   A fibers, and they conduct impulses at 10 meters per second.
B)   C fibers, and they conduct impulses at 1 meter per second.
C)   D fibers, and they conduct impulses at 0.1 meter per second.
D)   C fibers, and they conduct impulses at 100 meters per second.
E)   D fibers, and they conduct impulses at 0.01 meter per second.F) B) and E)
G) A) and D)

Question 8

According to Ohm's law, current is

Accepted Answer

A)   directly related to both voltage and resistance.
B)   directly related to voltage and inversely related to resistance.
C)   inversely related to both voltage and resistance.
D)   indirectly related to voltage and directly related to resistance.E) None of the above
F) A) and B)

Question 9

The epineurium is composed of

Accepted Answer

A)   dense regular connective tissue.
B)   simple squamous epithelium.
C)   dense irregular connective tissue.
D)   areolar connective tissue.
E)   pseudostratified nonkeratinized epithelium.F) B) and D)
G) B) and E)

Question 10

A neuropeptide is a molecule that is synthesized from an amino acid by the removal of a carboxyl group and the addition of another small functional group such as an amine group.

Accepted Answer

A) True 
 B)False

Question 11

Most commonly, a synapse is made between a

Accepted Answer

A)   presynaptic neuron's dendrite and a postsynaptic membrane's cell body.
B)   presynaptic neuron's axon and a postsynaptic neuron's dendrite.
C)   presynaptic neuron's axon hillock and a postsynaptic neuron's cell body.
D)   presynaptic neuron's soma and a postsynaptic neuron's synaptic knob.E) C) and D)
F) B) and D)

Question 12

One of the ways in which neurotransmitter is removed from the synaptic cleft is

Accepted Answer

A)   endocytosis by the postsynaptic cell.
B)   reuptake by the presynaptic cell.
C)   phagocytosis by a macrophage.
D)   dendritic lassos.E) B) and D)
F) B) and C)

Question 13

An action potential involves a temporary reversal of polarity across the plasma membrane (that is, the inside of the axon becomes relatively positive compared to the interstitial fluid).

Accepted Answer

A) True 
 B)False

Question 14

The neurons that are responsible for integrating information by retrieving, processing, storing, and "deciding" how the body responds to stimuli are

Accepted Answer

A)   sensory neurons.
B)   motor neurons.
C)   accessory neurons.
D)   correlation neurons.
E)   interneurons.F) All of the above
G) B) and D)

Question 15

Maintenance of appropriate ion concentrations (especially after nerve impulses that involved ion diffusion)  is primarily the job of

Accepted Answer

A)   voltage-gated channels.
B)   sodium-potassium pumps.
C)   chemically gated channels.
D)   mechanically gated channels.E) A) and C)
F) B) and C)

Question 16

When a neurotransmitter opens a chemically gated ion channel that allows sodium to enter the postsynaptic cell, the result is an

Accepted Answer

A)   EPSP.
B)   IPSP.C) A) and B)
D) undefined

Question 17

Graded potentials generally occur only on the axon of a neuron.

Accepted Answer

A) True 
 B)False

Question 18

The conductive segment of a neuron is its ________, a region that contains many ________ gated channels.

Accepted Answer

A)   axon, voltage-
B)   axon, chemically
C)   dendrite, voltage-
D)   dendrite, chemicallyE) None of the above
F) C) and D)

Question 19

Glial cells differ from neurons in that they

Accepted Answer

A)   are larger and capable of meiosis.
B)   are smaller and capable of mitosis.
C)   are found only in the CNS.
D)   are found only in the PNS.
E)   transmit nerve impulses much more slowly.F) A) and B)
G) A) and D)

Question 20

Conductive activity in a neuron generally causes it to secrete

Accepted Answer

A)   a specific neurotransmitter that either excites or inhibits its target.
B)   a specific neurotransmitter that always excites its target.
C)   several types of neurotransmitters simultaneously, all of which excite the cell's target.
D)   several types of neurotransmitters simultaneously, that are broadcast to excite and inhibit multiple targets.
E)   several types of neurotransmitters simultaneously, that all work to prevent another immediate impulse.F) B) and E)
G) A) and B)

Exam 12: Nervous System: Nervous Tissue

The glial cell that provides structural support and organization to the CNS is the

Correct Answer
verified

What do all glial cells have in common?

Correct Answer
verified

Glial cells help maintain the structure of synapses and they can modify neural transmission.

Correct Answer
verified

The neurons that are responsible for integrating information by retrieving, processing, storing, and "deciding" how the body responds to stimuli are

Correct Answer
verified

A nerve impulse travels fastest along axons of diameter.

Correct Answer
verified

Maintenance of appropriate ion concentrations (especially after nerve impulses that involved ion diffusion) is primarily the job of

Correct Answer
verified

Which is not a general function of the nervous system?

Correct Answer
verified

Glial cells differ from neurons in that they

Correct Answer
verified

The conductive segment of a neuron is its , a region that contains many gated channels.

Correct Answer
verified

Conductive activity in a neuron generally causes it to secrete

Correct Answer
verified

The slowest category of nerve fibers are the

Correct Answer
verified

Most commonly, a synapse is made between a

Correct Answer
verified

One of the ways in which neurotransmitter is removed from the synaptic cleft is

Correct Answer
verified

Correct Answer
verified

According to Ohm's law, current is

Correct Answer
verified

A neuropeptide is a molecule that is synthesized from an amino acid by the removal of a carboxyl group and the addition of another small functional group such as an amine group.

Correct Answer
verified

Graded potentials generally occur only on the axon of a neuron.

Correct Answer
verified

When a neurotransmitter opens a chemically gated ion channel that allows sodium to enter the postsynaptic cell, the result is an

Correct Answer
verified

An action potential involves a temporary reversal of polarity across the plasma membrane (that is, the inside of the axon becomes relatively positive compared to the interstitial fluid).

Correct Answer
verified

The epineurium is composed of

Correct Answer
verified

Exam 12: Nervous System: Nervous Tissue

The glial cell that provides structural support and organization to the CNS is the

Correct AnswerverifiedShow Answer

What do all glial cells have in common?

Correct AnswerverifiedShow Answer

Glial cells help maintain the structure of synapses and they can modify neural transmission.

Correct AnswerverifiedShow Answer

The neurons that are responsible for integrating information by retrieving, processing, storing, and "deciding" how the body responds to stimuli are

Correct AnswerverifiedShow Answer

A nerve impulse travels fastest along ________ axons of ________ diameter.

Correct AnswerverifiedShow Answer

Maintenance of appropriate ion concentrations (especially after nerve impulses that involved ion diffusion) is primarily the job of

Correct AnswerverifiedShow Answer

Which is not a general function of the nervous system?

Correct AnswerverifiedShow Answer

Glial cells differ from neurons in that they

Correct AnswerverifiedShow Answer

The conductive segment of a neuron is its ________, a region that contains many ________ gated channels.

Correct AnswerverifiedShow Answer

Conductive activity in a neuron generally causes it to secrete

Correct AnswerverifiedShow Answer

The slowest category of nerve fibers are the

Correct AnswerverifiedShow Answer

Most commonly, a synapse is made between a

Correct AnswerverifiedShow Answer

One of the ways in which neurotransmitter is removed from the synaptic cleft is

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

According to Ohm's law, current is

Correct AnswerverifiedShow Answer

A neuropeptide is a molecule that is synthesized from an amino acid by the removal of a carboxyl group and the addition of another small functional group such as an amine group.

Correct AnswerverifiedShow Answer

Graded potentials generally occur only on the axon of a neuron.

Correct AnswerverifiedShow Answer

When a neurotransmitter opens a chemically gated ion channel that allows sodium to enter the postsynaptic cell, the result is an

Correct AnswerverifiedShow Answer

An action potential involves a temporary reversal of polarity across the plasma membrane (that is, the inside of the axon becomes relatively positive compared to the interstitial fluid).

Correct AnswerverifiedShow Answer

The epineurium is composed of

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

A nerve impulse travels fastest along axons of diameter.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The conductive segment of a neuron is its , a region that contains many gated channels.

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