Question 1

Ischemic cell damage is caused by a lack of blood flow,which deprives cells of

Accepted Answer

A)   sodium ions.
B)   potassium ions.
C)   oxygen.
D)   carbon dioxide.
E)   chloride ions.F) A) and B)
G) B) and C)

Question 2

The two major types of cells found in nervous tissue are

Accepted Answer

A)   neurons and neuroglia.
B)   dendrites and axions.
C)   neurons and effectors.
D)   astrocytes and Schwann cells.
E)   neurons and nerves.F) A) and C)
G) C) and D)

Question 3

During an action potential,repolarization occurs as a result of

Accepted Answer

A)   potassium ions diffusing to the outside of the cell membrane.
B)   potassium ions diffusing to the inside of the cell membrane.
C)   sodium ions diffusing to the outside of the cell membrane.
D)   sodium ions diffusing to the inside of the cell membrane.
E)   sodium and potassium ions not diffusing.F) A) and D)
G) C) and D)

Question 4

Neurons that release acetylcholine are ____________ neurons;those that secrete norepinephrine are ___________.

Accepted Answer

A)   adrenergic;cholinergic
B)   cholinergic;adrenergic
C)   kinesthetic;nicotinic
D)   adrenergic;muscarinicE) B) and C)
F) C) and D)

Question 5

Which of the following lists parts of a reflex arc in the correct sequence?

Accepted Answer

A)   receptor,motor neuron,sensory neuron,interneuron,effector
B)   effector,receptor,sensory neuron,interneuron,motor neuron
C)   effector,sensory neuron,receptor,motor neuron,interneuron
D)   receptor,sensory neuron,interneuron.motor neuron,effector
E)   receptor,interneuron,effector,sensory neuron,motor neuronF) A) and E)
G) A) and D)

Question 6

This structural type of neuron includes most neurons whose cell bodies lie within the central nervous system.

Accepted Answer

A)   sensory neurons
B)   multipolar
C)   bipolar
D)   unipolarE) C) and D)
F) A) and C)

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

These neuroglia produce the myelin sheath on neurons of the peripheral nervous system.

Accepted Answer

A)   astrocytes
B)   ependymal cells
C)   oligodendrocytes
D)   microglia
E)   Schwann cellsF) D) and E)
G) None of the above

Question 9

A deficiency of calcium in the body can result in involuntary muscle contractions.

Accepted Answer

A) True 
 B)False

Question 10

The subarachnoid space within the meninges contains cerebrospinal fluid.

Accepted Answer

A) True 
 B)False

Question 11

Action potentials reaching the synaptic knob open voltage-gated ________ channels,triggering synaptic vesicles to release neurotransmitter.

Accepted Answer

A)   sodium
B)   potassium
C)   calcium
D)   acetylcholineE) C) and D)
F) A) and B)

Question 12

Neurons that conduct impulses into the brain or spinal cord are functionally classified as

Accepted Answer

A)   motor neurons.
B)   interneurons.
C)   sensory neurons.D) A) and B)
E) A) and C)

Question 13

The spinothalamic tract conducts impulses

Accepted Answer

A)   from the thalamus to the cerebral cortex.
B)   up the spinal cord to the thalamus.
C)   down the spinal cord from the thalamus.
D)   that stimulate contraction of skeletal muscle.
E)   between left and right cerebral hemispheres.F) A) and B)
G) A) and E)

Question 14

The most abundant cation within cells is ________;the most abundant cation outside of cells is ________.

Accepted Answer

A)   oxygen;carbon
B)   hydrogen;oxygen
C)   sodium;potassium
D)   potassium;sodiumE) All of the above
F) B) and C)

Question 15

The first component of a reflex arc is a(n)

Accepted Answer

A)   effector.
B)   receptor.
C)   central nervous system.D) None of the above
E) All of the above

Question 16

Composed of the midbrain,pons,and medulla oblongata,this portion of the brain regulates certain visceral activities such as heart rate and breathing.

Accepted Answer

A)   diencephalon
B)   cerebellum
C)   cerebrum
D)   brainstemE) None of the above
F) A) and B)

Question 17

This structural type of neuron has a single process that extends from the cell body.

Accepted Answer

A)   unipolar
B)   bipolar
C)   multipolarD) All of the above
E) A) and C)

Question 18

When a neuron's membrane becomes more permeable to sodium,the neuron

Accepted Answer

A)   becomes polarized.
B)   hyperepolarizes.
C)   depolarizes
D)   repolarizes.E) B) and C)
F) None of the above

Question 19

In a resting neuron,the difference in charges between the outside and inside of the membrane is called a(n)

Accepted Answer

A)   action potential.
B)   resting potential.
C)   graded potential.
D)   retrograde potential.E) A) and D)
F) B) and C)

Question 20

This outer meninx is composed mostly of white fibrous connective tissue and contains many blood vessels and nerves.

Accepted Answer

A)   pia mater
B)   denticulate fibers
C)   arachnoid mater
D)   dura materE) A) and B)
F) None of the above

Exam 9: Nervous System

The most abundant cation within cells is ________;the most abundant cation outside of cells is ________.

Correct AnswerverifiedShow Answer

These neuroglia produce the myelin sheath on neurons of the peripheral nervous system.

Correct AnswerverifiedShow Answer

The two major types of cells found in nervous tissue are

Correct AnswerverifiedShow Answer

Composed of the midbrain,pons,and medulla oblongata,this portion of the brain regulates certain visceral activities such as heart rate and breathing.

Correct AnswerverifiedShow Answer

Ischemic cell damage is caused by a lack of blood flow,which deprives cells of

Correct AnswerverifiedShow Answer

The spinothalamic tract conducts impulses

Correct AnswerverifiedShow Answer

Neurons that conduct impulses into the brain or spinal cord are functionally classified as

Correct AnswerverifiedShow Answer

Neurons that release acetylcholine are ____________ neurons;those that secrete norepinephrine are ___________.

Correct AnswerverifiedShow Answer

The subarachnoid space within the meninges contains cerebrospinal fluid.

Correct AnswerverifiedShow Answer

A deficiency of calcium in the body can result in involuntary muscle contractions.

Correct AnswerverifiedShow Answer

Action potentials reaching the synaptic knob open voltage-gated ________ channels,triggering synaptic vesicles to release neurotransmitter.

Correct AnswerverifiedShow Answer

This structural type of neuron has a single process that extends from the cell body.

Correct AnswerverifiedShow Answer

Which of the following lists parts of a reflex arc in the correct sequence?

Correct AnswerverifiedShow Answer

During an action potential,repolarization occurs as a result of

Correct AnswerverifiedShow Answer

In a resting neuron,the difference in charges between the outside and inside of the membrane is called a(n)

Correct AnswerverifiedShow Answer

This outer meninx is composed mostly of white fibrous connective tissue and contains many blood vessels and nerves.

Correct AnswerverifiedShow Answer

The first component of a reflex arc is a(n)

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

When a neuron's membrane becomes more permeable to sodium,the neuron

Correct AnswerverifiedShow Answer

This structural type of neuron includes most neurons whose cell bodies lie within the central nervous system.

Correct AnswerverifiedShow Answer

The most abundant cation within cells is ;the most abundant cation outside of cells is .

Correct Answer
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Neurons that release acetylcholine are __ neurons;those that secrete norepinephrine are _.

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