Question 1

The cytoplasm within a cell body of a neuron is called the

Accepted Answer

A)  soma.
B)  perikaryon.
C)  neurokaryon.
D)  chromatophilic substance.
E)  chromatophobic substance.F) B) and D)
G) D) and E)

Question 2

The type of neuronal circuit that spreads information from one presynaptic neuron to several postsynaptic neurons is a _____________ circuit.

Accepted Answer

A)  converging
B)  diverging
C)  reverberating
D)  parallel-after-discharge
E)  None of the choices is correct.F) C) and E)
G) A) and B)

Question 3

Any neurotransmitter that generates an IPSP is functionally classified as inhibitory.

Accepted Answer

A) True 
 B)False

Question 4

The motor nervous system is also known as the __________ nervous sytem.

Accepted Answer

The answer of The motor nervous system is also known...

Question 5

The nervous system controls the activity of muscles and glands.Muscles and glands can generate changes and are therefore called

Accepted Answer

A)  afferents.
B)  effectors.
C)  stimuli.
D)  visceral.E) None of the above
F) A) and D)

Question 6

A neuron conducting an impulse from the stomach wall to the CNS would be classified as a(n) __________ neuron.

Accepted Answer

A)  autonomic motor
B)  somatic sensory
C)  somatic motor
D)  visceral sensoryE) A) and C)
F) None of the above

Question 7

As a neuron's refractory period ends,its sodium channels are changing from

Accepted Answer

A)  their resting state to their inactivated state.
B)  their inactivated state to their resting state.
C)  their resting state to their activated state.
D)  their activated state to their resting state.E) All of the above
F) A) and B)

Question 8

The main way acetylcholine is cleared from a synapse is by

Accepted Answer

A)  degradation by an enzyme.
B)  uptake by the postsynaptic cell.
C)  reuptake by the presynaptic cell.
D)  being engulfed by a supporting glial cell.E) A) and B)
F) None of the above

Question 9

With damage to nerve fibers,larger distances between the site of damage and the target structure innervated result in _________ chances of successful regeneration.

Accepted Answer

A)  increased
B)  decreasedC) A) and B)
D) undefined

Question 10

Typically,a multipolar neuron has many dendrites and one axon extending from the cell body.

Accepted Answer

A) True 
 B)False

Question 11

The spinal cord is part of the central nervous system.

Accepted Answer

A) True 
 B)False

Question 12

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) All of the above
F) C) and D)

Question 13

A neuron's membrane contains more potassium leak channels than sodium leak channels.

Accepted Answer

A) True 
 B)False

Question 14

Receptors are parts of the nervous system that allow it to

Accepted Answer

A)  initiate responses to information.
B)  process information.
C)  collect information.
D)  conduct impulses to muscles.E) C) and D)
F) All of the above

Question 15

The glial cell that helps to form the blood-brain barrier is the

Accepted Answer

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

Question 16

Which statement accurately compares the transmission speed of the different types of synapses

Accepted Answer

A)  Transmission at chemical synapses involves a brief synaptic delay,but electrical synapses are faster.
B)  Transmission at both chemical and electrical synapses involves a synaptic delay of approximately 1 millisecond.
C)  Transmission at electrical synapses involves a brief synaptic delay,but chemical synapses are faster.
D)  Electrical synapses have a constant delay of 1 millisecond,but chemical synaptic delays vary between 0.1 and 0.3 millisecond.E) B) and D)
F) All of the above

Question 17

When voltage-gated K+channels open on the conductive segment of a neuron,

Accepted Answer

A)  potassium exits,repolarizing the cell to a negative value.
B)  potassium exits,depolarizing the cell to an even more negative value.
C)  potassium enters,depolarizing the cell to a positive value.
D)  potassium enters,repolarizing the cell to a negative value.
E)  potassium enters,repolarizing the cell to a positive value.F) A) and D)
G) A) and C)

Question 18

When a single presynaptic neuron repeatedly releases neurotransmitter in a very short period of time,it results in ____________ summation in the postsynaptic neuron.

Accepted Answer

The answer of When a single presynaptic neuron repeatedly releases...

Question 19

The primary inhibitory neurotransmitter in the brain is

Accepted Answer

A)  glutamate.
B)  valine.
C)  GABA.
D)  serotonin.
E)  serine.F) D) and E)
G) A) and E)

Question 20

A postsynaptic potential is a graded potential.

Accepted Answer

A) True 
 B)False

Exam 12: Nervous System: Nervous Tissue

The cytoplasm within a cell body of a neuron is called the

Correct AnswerverifiedShow Answer

According to Ohm's law,current is

Correct AnswerverifiedShow Answer

The motor nervous system is also known as the __________ nervous sytem.

Correct AnswerverifiedShow Answer

The nervous system controls the activity of muscles and glands.Muscles and glands can generate changes and are therefore called

Correct AnswerverifiedShow Answer

As a neuron's refractory period ends,its sodium channels are changing from

Correct AnswerverifiedShow Answer

A neuron's membrane contains more potassium leak channels than sodium leak channels.

Correct AnswerverifiedShow Answer

A neuron conducting an impulse from the stomach wall to the CNS would be classified as a(n) __________ neuron.

Correct AnswerverifiedShow Answer

The type of neuronal circuit that spreads information from one presynaptic neuron to several postsynaptic neurons is a _____________ circuit.

Correct AnswerverifiedShow Answer

The main way acetylcholine is cleared from a synapse is by

Correct AnswerverifiedShow Answer

The primary inhibitory neurotransmitter in the brain is

Correct AnswerverifiedShow Answer

With damage to nerve fibers,larger distances between the site of damage and the target structure innervated result in _________ chances of successful regeneration.

Correct AnswerverifiedShow Answer

A postsynaptic potential is a graded potential.

Correct AnswerverifiedShow Answer

Receptors are parts of the nervous system that allow it to

Correct AnswerverifiedShow Answer

The glial cell that helps to form the blood-brain barrier is the

Correct AnswerverifiedShow Answer

When voltage-gated K+channels open on the conductive segment of a neuron,

Correct AnswerverifiedShow Answer

The spinal cord is part of the central nervous system.

Correct AnswerverifiedShow Answer

When a single presynaptic neuron repeatedly releases neurotransmitter in a very short period of time,it results in ____________ summation in the postsynaptic neuron.

Correct AnswerverifiedShow Answer

Any neurotransmitter that generates an IPSP is functionally classified as inhibitory.

Correct AnswerverifiedShow Answer

Which statement accurately compares the transmission speed of the different types of synapses

Correct AnswerverifiedShow Answer

Typically,a multipolar neuron has many dendrites and one axon extending from the cell body.

Correct AnswerverifiedShow Answer

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When voltage-gated K⁺channels open on the conductive segment of a neuron,

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