CHP 13-14 Flashcards

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1
Q

The brainstem consists of these four structures:

A

The medulla, pons, and midbrain, and reticular formation.

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2
Q

What is the medulla oblongata responsible for?

A

The medulla is the center for several important reflexes (i.e, heart rate, vomiting, breathing, coughing/sneezing).

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3
Q

What is the pons responsible for?

A

The pons is responsible for relaying information between the cerebrum and cerebellum; site for reflex center.

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4
Q

What is the function of the midbrain?

A

The midbrain serves as visual reflex center.

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5
Q

What does the reticular formation control?

A

The sleep/wake cycle.

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6
Q

What is the functions of our cerebellum?

A

Our cerebellum controls muscle movement, balance, and is responsible for muscle memory.

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7
Q

What are the four subdivisions of our Diencephalon?

A

The thalamus, sub-, epi-, and hypo- thalamus.

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8
Q

What does our thalamus influence? What is it’s major role?

A

Our thalamus influences mood and movement and is the major sensory relay center.

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9
Q

What is the function of the hypothalamus?

A

The hypothalamus is the major control center for maintaining homeostasis and regulating endocrine functions.

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10
Q

What are the two structures of the cerebrum?

A

The basal nuclei and the limbic system.

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11
Q

What are the functions of the basal nuclei?

A

The basal nuclei controls muscle activity and posture; inhibits unintentional movement.

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12
Q

What is the function of the limbic system?

A

The limbic system produces autonomic responses to smell, emotion, mood, and memory.

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13
Q

The medulla consists of structures called olives. What are they?

A

Olives are nuclei that help regulate balance, coordination, and modulation of sound from inner ear.

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14
Q

The medulla consists of the nuclei for these nerves:

A

V, IX-XII

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15
Q

The pontine, relating to or affecting the __ of the brain, acts as a relay between the ____ and ____.

A

Pons; cerebrum, cerebellum.

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16
Q

The pons consists of the nuclei for these nerves:

A

V-IX

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17
Q

The midbrain consists of the nuclei for these nerves:

A

III-V

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18
Q

The Tectum is a structure of the midbrain that consists of the

A

Inferior and superior colliculi.

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19
Q

The two superior colliculi are involved in ____ reflexes.

A

Visual.

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20
Q

The two inferior colliculi are involved in ____ reflexes.

A

Auditory.

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21
Q

The superior colliculi receive information from the ____ ____, ____, ____, and cerebrum.

A

Inferior colliculi, eyes, skin.

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22
Q

The midbrain contains what type of nuclei that is aids in unconscious regulation and coordination of motor activities.

A

Red nuclei.

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23
Q

Red nuclei

A

aids in unconscious regulation and coordination of motor activities in the midbrain.

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24
Q

Tegmentum are

A

ascending tracts of the midbrain. Ex. are spinal and medial lemniscus.

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25
Q

The group of nuclei scattered throughout the brainstem forms the

A

Reticular formation.

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26
Q

What are cerebellar peduncles?

A

Fiber tracts that communicate with other parts of the brain.

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27
Q

The cortex is folded in ridges called __.

A

Folia.

28
Q

____ cells are the largest in the CNS, are inhibitory, and are the only cortex neurons that send axons to cerebellar nuclei.

A

Purkinje.

29
Q

Walking a tightrope would activate what portion of the medulla?

A

The pyramids and the olives.

30
Q

Damage to the pontine nuclei might affect __

A

Vision.

31
Q

The ____ ____ are involved with auditory pathways in the CNS.

A

Inferior colliculi.

32
Q

During an autopsy the brainstem was separated from the rest of the brain by a cut between the

A

midbrain and diencephalon.

33
Q

The cerebellum communicate with other parts of the CNS by means of nerve tracts called the

A

Cerebellar peduncles.

34
Q

The portion of the cerebellum that is involved in balance and eye movements is the ____

A

Flocculonodular lobe.

35
Q

The occulomoter nerve

A

adjusts pupil size to the level of lighting.

36
Q

The ____ only innervates one muscle of the eyeball.

A

Trochlear nerve.

37
Q

Visceral senses provide information regarding

A

pain and pressure in internal organs.

38
Q

Somatic senses provide information regarding

A

information about the body and environment including: touch, pressure, temperature, proprioception, and pain.

39
Q

Special senses include:

A

smell, taste, sight, hearing, and balance.

40
Q

____ ____ generate APs called a generator potential.

A

General (primary) receptors.

41
Q

____ ____ produces a receptor potential in special senses.

A

Secondary receptor.

42
Q

General senses are composed of ____ and ____ senses.

A

Somatic, Visceral.

43
Q

The five types of sensory receptors are:

A

Mechanoreceptors, chemoreceptors, thermoreceptors, photoreceptors, and nociceptors.

44
Q

Mechanoreceptors are receptors that respond to:

A

Touch, pressure, proprioception, hearing, and balance.

45
Q

Chemoreceptors are receptors that respond to:

A

Smell and taste. Chemicals become attached to receptors on their membranes.

46
Q

Thermoreceptors are receptors that respond to:

A

Changes in temperature.

47
Q

Photoreceptors are receptors that respond to:

A

Light: Vision.

48
Q

Nociceptors are receptors that detect:

A

Pain, or extreme mechanical, chemical, or thermal stimuli.

49
Q

The three types of receptors based on location are:

A

Exteroreceptors, visceroreceptors, and proprioceptors.

50
Q

Free nerve endings respond to __, ____, ____, ____, ____.

A

painful stimuli, temperature, itch, joint movement, and proprioception.

51
Q

Merkel disks detect ____ and ____.

A

Light touch, superficial pressure.

52
Q

Pacinian corpuscle detects:

A

deep cutaneous pressure, vibration, and proprioception.

53
Q

____ ____ are involved in two-point discrimination

A

Meissner corpuscles.

54
Q

In free nerve endings, ____ are 10-15 times more numerous than ____.

A

Cold, warm.

55
Q

Ruffini end organs are primarily in

A

The dermis of the fingers, and respond to continuous touch or pressure.

56
Q

What is accommodation?

A

Decreased sensitivity to a continued stimulus.

57
Q

The two types of proprioceptors are ____ and ____ receptors.

A

Tonic (slowly adapting), and phasic (rapidly adapting).

58
Q

The Anterolateral system is a __ neuron system that conveys

A

3; pain, temperature, light touch, pressure, tickle and itch.

59
Q

The right cerebral cortex controls

A

3-D or spatial perception, recognition of faces, musical ability, muscular activity and receives sensory information from left side of body.

60
Q

The left cerebral cortex controls

A

Math, speech, muscular activity and receives sensory information from right side of body.

61
Q

Alpha.

A

Resting state with eyes closed.

62
Q

Beta.

A

During intense mental activity.

63
Q

Theta.

A

Occur in children and adults experiencing frustration or brain disorders.

64
Q

Delta.

A

Occurs in sleep, infancy, and severe brain disorders.

65
Q

Long-term memory (declarative or explicit) are accessed by

A

Hippocampus (actual memory) and amygdaloid nucleus (emotional).