Lab 2: Brain Flashcards Preview

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Flashcards in Lab 2: Brain Deck (82)
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61

What are the cerebral peduncles?

White matter tracts that are projection fibres

62

What are the functions of the cerebellum?

Controls muscle tone
Balabc
Intention vs achievement
Suggests adjustments

63

What area is first affected by alcohol?

Cerebellum

64

What exhibits ipsilateral (same side) control?

Cerebellum

65

What does the pons control?

Communication between hemispheres of the cerebellum

66

What does the medulla contain?

White matter tracts

67

What are the five components of hearing and speaking?

Primary auditory cortex
Wernicke's area
Broca's area
Primary motor cortex (face)
Primary auditory area

68

What are the five general components of either hearing and speaking or reading and writing?

1) Receive input
2) Understand meaning
3) Plan response
4) Conduct response
5) Feedback evaluation

69

What are the 4 main primary areas?

Primary motor cortex
Primary somatosensory cortex
Primary visual cortex
Primary auditory cortex

70

What does the PMC control?

Voluntary muscle movement

71

What specific region of the PVC controls central vision?

The pole

72

What does the PAX receive information about? How is it organised?

Auditory information: pitch, tone, rhythm
Tonotopic organisation. Recognises high pitch in some areas and low pitch in other areas.

73

Do the four primary areas have any function in integrating information?

NO

74

What are the four main secondary/association areas? What are the functions of each?

Exner's area: plans movements in writing
Broca's speech area: pans movements in speaking
Supramarginal and angular gyri: understanding reading and writing and giving meaning to written symbols.
Wernicke's area: understanding speech and giving meaning to sound

75

Where is Exner's area found?

In the premotor cortex, just before the part of the PMC associated with the hand.

76

What lies in the cortex? What makes up the white matter tracts?

Cell bodies of neurones. Send axons (white matter) which makes up white matter tracts.

77

What are the three types of white matter tract?

1) Commissural fibres/tract
2) Projection fibres
3) Association fibres

78

What function do commissural fibres have?

Transfers information between hemispheres.

79

What function do projection fibres have?

Transfers information from the top of the brain to the bottom

80

What function do association fibres have?

Transfers information within the same hemisphere. e.g. between gyri.

81

What does the head of the caudate nucleus run along?

The walls of the lateral ventricle

82

What type of structure is the cerebellum?

Posterior structure