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A&P > Ch. 12 - CNS > Flashcards

Ch. 12 - CNS Flashcards

1
Q

The transverse cerebral fissure separates the cerebral hemispheres from (a) the cerebellum, (b) the brain stem, (c) the spinal cord, (d) each other.

A

A

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2
Q

Which one of the following structures is not found in gray matter? (a) neuron cell bodies, (b) dendrites, (c) glial cells, (d) fiber tracts.

A

D

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3
Q

Nuclei of cranial nerves V, VI, and VII are found in the (a) midbrain, (b) medulla, (c) pons, (d) cerebrum.

A

C

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4
Q

An individual accidentally transected the spinal cord between T1 and L1. This would result in (a) paraplegia, (b) hemiplegia, (c) quadriplegia, (d) spinal shock only.

A

A

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5
Q

basal nuclei involved in fine control of motor activities

cerebellum, corpora quadrigemina, corpus callous, striatum

A

striatum

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6
Q

region where there is a gross crossover of fibers of descending pyramidal tracts

striatum, hypothalamus, medulla, midbrain

A

medulla

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7
Q

control of temperature, autonomic nervous system reflexes, hunger, and water balance

hypothalamus, midbrain, cerebellum, pons

A

hypothalamus

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8
Q

houses the substantial migrant and cerebral aqueduct

medulla, midbrain, pons, thalamus

A

midbrain

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9
Q

relay stations for visual and auditory stimuli input; found in midbrain

cerebellum, corpora quadrigemina, corpus callous, striatum

A

corpora quadrigemina

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10
Q

houses vital centers for control of the heart, respiration, and blood pressure

medulla, midbrain, pons, thalamus

A

medulla

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11
Q

brain area through which all the sensory input is relayed to get to the cerebral cortex

thalamus, hypothalamus, medulla, midbrain

A

thalamus

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12
Q

brain area most concerned with equilibrium, body posture, and coordination of motor activity

hypothalamus, midbrain, cerebellum, pons

A

cerebellum

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13
Q

Two terms for the massive motor tracts serving voluntary movement are (a) pyramidal and corticospinal, (b) extrapyramidal and rubrospinal, (c) segmental and nigrostriatal, (d) supplementary and cerebellar-pontine.

A

A

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14
Q

Destruction of the ventral horn cells of the spinal cord results in loss of (a) integrating impulses, (b) sensory impulses,
(c) voluntary motor impulses, (d) all of these.

A

C

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15
Q

Fiber tracts that allow neurons within the same cerebral hemisphere to communicate are (a) association fibers, (b) commissures, (c) projection fibers.

A

A

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16
Q

An individual who could trace a picture of a bicycle with his or her finger but could not recognize it as a bicycle is most likely
to have sustained damage to the (a) calcarine cortex, (b) primary visual area, (c) visual association area, (d) lateral geniculate body.

A

C

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17
Q

All of the following descriptions refer to dorsal column–medial lemniscal ascending pathways except one: (a) they include the fasciculus gracilis and fasciculus cuneatus; (b) they include
a chain of three neurons; (c) their connections are diffuse
and poorly localized; (d) they are concerned with precise transmission of one or a few related types of sensory input.

A

C

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18
Q

Which of the following is not a function of astrocytes?

a) support and brace neurons b) anchor neurons to blood vessels c)guide the migration of young neurons, synapse formation, and helping to determine capillary permeability d) provide the defense for the CNS

A

D

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19
Q

These cells in the CNS have cilia that move in order to circulate cerebrospinal fluid:

ependymal, Schwann, oligodendrocytes, astrocytes

A

ependymal

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20
Q

which of the following is not characteristic of neurons?

a) they conduct impulses b) they have extreme longevity c)they are mitotic d) they have an exceptionally high metabolic rate

A

C

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21
Q

which of the following is not a function of the autonomic nervous system?

a- innervation of smooth muscle of the digestive tract b- innervation of cardiac muscle c- innervation of glands d- innervation of skeletal muscle

A

D

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22
Q

Collections of nerve cell bodies outside the central nervous system are called _______

nuclei, nerves, ganglia, tracts

A

ganglia

23
Q

which of the following is an excitatory neurotransmitter secreted by motor neurons innervating skeletal muscle?

Cholinesterase, norepinephrine, acetylcholine, gamma aminobutyric acid

A

acetylcholine

24
Q

which of the following describes the nervous system integrative function?

a- Senses changes in the environment, b- analyzes sensory information, stores information, makes decisions, c- responds to stimuli by gland secretion or muscle contraction

A

B

25
Q

the period after an initial stimulus when a neuron is not sensitive to another stimulus is the ____

Resting period, depolarization, depolarization, absolute refractory period

A

absolute refractory period

26
Q

which ion channel opens in response to a change in membrane potential and participates in the generation and conduction of action potentials?

Mechanically gated channel, voltage-gated channel, leakage channel, ligand-gated channel

A

voltage gated channel

27
Q

loss of canton in the enzyme acetylcholine esterase would result in which of the following?

inability to release ACh, amplify or enhance the effect of ACh, inability to destroy and remove acetylcholine from the synaptic cleft, stimulation of the production of acetylcholine

A

Inability to destroy and remove ACh from the synaptic cleft

28
Q

Which of the following correctly describes a graded potential?

a- it travels long distances, b- it can have amplitudes of various sizes, c- it is initiated by collage changes in the membrane, d- it has a depolarization, depolarization and hyper polarization phase

A

B

29
Q

Immediately after an action potential has peaked, which of the following channels will open?

a- voltage gated sodium channels, b- chemically gated chlorine channels, c- voltage gated calcium channels, d- voltage gated potassium channels

A

D

30
Q

which of the following is not true of graded potentials?

A- They are short-lived, B- they can form on receptor endings, C- they increase amplitude as they move away from the stimulus point, D- they can be called postsynaptic potentials

A

C

31
Q

The interior surface of neuron’s plasma membrane at resting membrane potential will have a ___:

A- positive charge and contains less sodium than outside of the cell, B- negative charge and contains less sodium than outside of the cell, C- negative charge and contains more sodium than outside the cell, D- positive charge and contains more sodium than outside of the cell

A

B

32
Q

The auditory area

A) Insula
B) Parietal Lobe
C) Frontal Lobe
D) Temporal Lobe
E) Occipital Lobe
A

D

33
Q

Primary somatosensory cortex

A) Insula
B) Parietal Lobe
C) Frontal Lobe
D) Temporal Lobe
E) Occipital Lobe
A

B

34
Q

Primary (somatic) motor cortex

A) Insula
B) Parietal Lobe
C) Frontal Lobe
D) Temporal Lobe
E) Occipital Lobe
A

C

35
Q

Motor speech (broca’s area)

A) Insula
B) Parietal Lobe
C) Frontal Lobe
D) Temporal Lobe
E) Occipital Lobe
A

C

36
Q

Premotor cortex

A) Insula
B) Parietal Lobe
C) Frontal Lobe
D) Temporal Lobe
E) Occipital Lobe
A

C

37
Q

Visual area

A) Insula
B) Parietal Lobe
C) Frontal Lobe
D) Temporal Lobe
E) Occipital Lobe
A

E

38
Q

Gustatory (taste) area

A) Insula
B) Parietal Lobe
C) Frontal Lobe
D) Temporal Lobe
E) Occipital Lobe
A

A

39
Q

Seat of intelligence, abstract reasoning

A) Insula
B) Parietal Lobe
C) Frontal Lobe
D) Temporal Lobe
E) Occipital Lobe
A

C

40
Q

A major relay station for sensory information ascending to the cerebral cortex. Contains many specialized nuclei.

A) Primary (somatic) motor cortex
B) Hypothalamus
C) Thalamus
D) Prefrontal cortex

A

C

41
Q

This brain area associates experiences necessary for the production of abstract ideas, judgement, and conscience

A) Primary (somatic) motor cortex
B) Hypothalamus
C) Thalamus
D) Prefrontal cortex

A

D

42
Q

The axons from this area form the major pyramidal (corticospinal) tracts

A) Primary (somatic) motor cortex
B) Hypothalamus
C) Thalamus
D) Prefrontal cortex

A

A

43
Q

This area is the main visceral control center of the body

A) Primary (somatic) motor cortex
B) Hypothalamus
C) Thalamus
D) Prefrontal cortex

A

B

44
Q

Gateway to the cerebrum

A) Brain stem
B) Cerebellum
C) Hypothalamus
D) Cerebrum
E) Thalamus
A

E

45
Q

Ensures coordination and balance

A) Brain stem
B) Cerebellum
C) Hypothalamus
D) Cerebrum
E) Thalamus
A

B

46
Q

Produces automatic behaviors necessary for survival

A) Brain stem
B) Cerebellum
C) Hypothalamus
D) Cerebrum
E) Thalamus
A

A

47
Q

Executive suite

A) Brain stem
B) Cerebellum
C) Hypothalamus
D) Cerebrum
E) Thalamus
A

D

48
Q

Visceral command center

A) Brain stem
B) Cerebellum
C) Hypothalamus
D) Cerebrum
E) Thalamus
A

C

49
Q

The brain stem consists of the _____

A- cerebrum, pons, midbrain, and medulla
B- midbrain, medulla, and pons
C- Pons, medulla, cerebellum, and midbrain
D- midbrain only

A

B

50
Q

What type of cells line the ventricles of the brain?

Ependymal, neurons, epithelial, astrocytes

A

ependymal

51
Q

Vital centers for the control of heart rate, respiration, and blood pressure are located in the _______

Pons, medulla oblongata, midbrain, cerebrum

A

medulla oblongata

52
Q

Which fissure separates the cerebral hemispheres?

Central, longitudinal, parieto-occipitaq, lateral

A

longitudinal

53
Q

Which of the following generalizations does NOT describe the cerebral cortex?

A- The cerebral cortex contains three kinds of of functional areas
B- each hemisphere is chiefly concerned with sensory and motor functions o the contralateral side of the body
C- the hemispheres are exactly equal in function
D- no functional area of the cortex works alone

A

C

A&P (8 decks)

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