Question 1

Masses of myelinated nerve fibers appear

Accepted Answer

A)   white.
B)   gray.
C)   brown.
D)   transparent.
E)   red.F) B) and E)
G) A) and D)

Question 2

Normal,quiet,everyday activities like resting and digesting are controlled by this division of the autonomic nervous system.

Accepted Answer

A)   somatic branch
B)   sympathetic branch
C)   parasympathetic branch
D)   adrenergic branchE) C) and D)
F) B) and C)

Question 3

Most nerves of the body are mixed nerves.

Accepted Answer

A) True 
 B)False

Question 4

In the case of a subdural hematoma (blood accumulating beneath the dura) resulting from a blow to the head,blood accumulates

Accepted Answer

A)   between the dura mater and the bone of the skull.
B)   between the dura mater and arachnoid mater.
C)   between the pia mater and brain.
D)   between the arachnoid mater and pia mater.
E)   between the subarachnoid space.F) C) and E)
G) B) and C)

Question 5

This part of the brain contains the thalamus and hypothalamus and processes sensory information.

Accepted Answer

A)   diencephalon
B)   cerebellum
C)   cerebrum
D)   brain stemE) C) and D)
F) A) and D)

Question 6

Sensory impulses from receptors of the feet reach the brain by way of these.

Accepted Answer

A)   lateral gray horns
B)   motor nerves
C)   ascending tracts
D)   descending tractsE) All of the above
F) B) and C)

Question 7

When a neuron's plasma membrane becomes more permeable to potassium,

Accepted Answer

A)   potassium leaves the cell.
B)   potassium enters the cell.
C)   sodium enters the cell.
D)   sodium leaves the cell.E) B) and D)
F) None of the above

Question 8

Neurotransmitters that hyperpolarize post-synaptic membranes are always

Accepted Answer

A)   inhibitory.
B)   excitatory.
C)   all-or-none.
D)   acetylcholine.E) None of the above
F) B) and D)

Question 9

The arbor vitae is part of the cerebrum.

Accepted Answer

A) True 
 B)False

Question 10

Gaps in the myelin sheath are called

Accepted Answer

A)   gap junctions.
B)   neurofibrils.
C)   nodes of Ranvier.
D)   synapses.E) B) and C)
F) A) and B)

Question 11

These neuroglia form the insulating myelin sheath around axons of the central nervous system.

Accepted Answer

A)   astrocytes
B)   ependymal cells
C)   oligodendrocytes
D)   microglia
E)   Schwann cellsF) A) and B)
G) B) and E)

Question 12

Sheaths of myelin produced by ____________ cells often enclose the axons outside of the brain and spinal cord.

Accepted Answer

The answer of Sheaths of myelin produced by ____________ cells...

Question 13

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

Accepted Answer

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

Question 14

Nerves of the peripheral nervous system usually form complex networks called ________.

Accepted Answer

A)   fiber tracts
B)   the caudaequina
C)   plexuses
D)   the reticular activating systemE) A) and B)
F) A) and C)

Question 15

Nodes of Ranvier connect adjacent neurons.

Accepted Answer

A) True 
 B)False

Question 16

A nerve impulse consists of a wave of __________ potentials moving along the axon of a neuron.

Accepted Answer

The answer of A nerve impulse consists of a wave...

Question 17

The cardiac and vasomotor centers are located in the

Accepted Answer

A)   pons.
B)   medulla oblongata.
C)   cerebellum.
D)   frontal lobe.
E)   thalamus.F) A) and D)
G) A) and E)

Question 18

When 10 or more pre-synaptic neurons conduct impulses to 5 or fewer post-synaptic neurons,the conduction pattern is said to be

Accepted Answer

A)   divergent.
B)   emergent.
C)   hyperpolarizing.
D)   convergent.E) C) and D)
F) A) and C)

Question 19

Neurons found only in specialized parts of the eyes,nose,and ears are

Accepted Answer

A)   bipolar.
B)   unipolar.
C)   multipolar.
D)   motor only.E) A) and B)
F) None of the above

Question 20

The complex network of tiny islands of gray matter in the brain that "awakens" the cerebral cortex is the

Accepted Answer

A)   dentate nucleus.
B)   reticular formation.
C)   limbic system.
D)   corpora quadrigemina.
E)   cerebellum.F) C) and E)
G) B) and C)

Exam 9: Nervous System

A nerve impulse consists of a wave of __________ potentials moving along the axon of a neuron.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Neurotransmitters that hyperpolarize post-synaptic membranes are always

Correct AnswerverifiedShow Answer

The cardiac and vasomotor centers are located in the

Correct AnswerverifiedShow Answer

Gaps in the myelin sheath are called

Correct AnswerverifiedShow Answer

This part of the brain contains the thalamus and hypothalamus and processes sensory information.

Correct AnswerverifiedShow Answer

Masses of myelinated nerve fibers appear

Correct AnswerverifiedShow Answer

Sheaths of myelin produced by ____________ cells often enclose the axons outside of the brain and spinal cord.

Correct AnswerverifiedShow Answer

These neuroglia form the insulating myelin sheath around axons of the central nervous system.

Correct AnswerverifiedShow Answer

Neurons found only in specialized parts of the eyes,nose,and ears are

Correct AnswerverifiedShow Answer

The complex network of tiny islands of gray matter in the brain that "awakens" the cerebral cortex is the

Correct AnswerverifiedShow Answer

Nodes of Ranvier connect adjacent neurons.

Correct AnswerverifiedShow Answer

Most nerves of the body are mixed nerves.

Correct AnswerverifiedShow Answer

Normal,quiet,everyday activities like resting and digesting are controlled by this division of the autonomic nervous system.

Correct AnswerverifiedShow Answer

Nerves of the peripheral nervous system usually form complex networks called ________.

Correct AnswerverifiedShow Answer

When 10 or more pre-synaptic neurons conduct impulses to 5 or fewer post-synaptic neurons,the conduction pattern is said to be

Correct AnswerverifiedShow Answer

Sensory impulses from receptors of the feet reach the brain by way of these.

Correct AnswerverifiedShow Answer

When a neuron's plasma membrane becomes more permeable to potassium,

Correct AnswerverifiedShow Answer

In the case of a subdural hematoma (blood accumulating beneath the dura) resulting from a blow to the head,blood accumulates

Correct AnswerverifiedShow Answer

The arbor vitae is part of the cerebrum.

Correct AnswerverifiedShow Answer

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