brain Flashcards

1
Q

whats cerebellum for

A

motor learning, cognitive function, balance

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2
Q

frontal association cortex

A

intelligence, personality, behavious, mood, cognitive function

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3
Q

parietal association cortex

A

spatial skills, 3D recognition (shapes, faces, concepts, abstract perception)

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4
Q

temporal association cortex

A

memory, mood, aggression, intelligence

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5
Q

what is in precentral gyrus

A

primary motor cortex (contains large motor neurons in periphery to activate movements at periphery)

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6
Q

what language areas only occur in dominant hemisphere

A

exners area (controls hand for writing
brocas speech area
wernickes area
smagla and agla

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7
Q

what does primary auditory cortex do

A

organise tones and times (block out unmeaningful context)

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8
Q

what does Wernickes area do

A

secondary cortical (interprets sounds)

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9
Q

what is in postcentral gyrus

A

primary sensory cortex (sensory axons recieve info so is granular shaped)

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10
Q

whats aphasia

A

difficulty in language due to lesion in wernickes area (fluent or sensory aphasia)

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11
Q

whats brocas aphasia

A

non fluent or motor aphasia (difficulty in expressing what they want to say)

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12
Q

whats connectional aphasia

A

connection between brocas and wernickes area affected

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13
Q

3 layers that protect spinal cord

A

pia, arachnoid, dura mater

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14
Q

what do rootlets do

A

distribute information to and from spinal cord. rootlets come together to form dorsal and ventral root

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15
Q

what do dorsal and ventral root form

A

spinal nerve

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16
Q

how fast are myelinated and unmyelinated axons

A

50m/s and 1 m/s

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17
Q

whats touch receptor called

A

Meissners corpuscle

18
Q

whats pressure receptor called

A

paccinian corpuscle

19
Q

what does free nerve ending affect

A

unmyelinated for pain and temp`

20
Q

what is the 3 regions of grey matter

A

sensory, autonomic, motor

21
Q

whats autonomic for

A

balance and posture

22
Q

what carries discriminative info

A

dorsal funiculus

23
Q

where do pain and temp fibres transport up to

A

ventral funiculus

24
Q

whats brown sequard syndrome

A

where one side of the spinal cord is damaged

25
Q

whats dissociative and associative sensory loss

A

dissociative - lesion further up
associative -lesion in brain stem

26
Q

what does lesion in upper motor neuron cause

A

spastic paralysis

27
Q

lesion in lower motor neuron causes

A

flaccid paralysis

28
Q

what are pyramids associated with

A

corticospinal tract

29
Q

what causes parkinsons disease

A

destruction of cells in substantia niagra (needs more glutamate but its toxic)

30
Q

What’s white matter

A

Has axon Tracts coming out from neurons

31
Q

What’s grey matter

A

Where neuron cell bodies are housed

32
Q

What’s Meissners corpuscle

A

Touch encapsulated receptor

33
Q

What’s paccinian corpuscle

A

Pressure encapsulated receptor

34
Q

What does less neurons mean

A

Less pain or sensation in that area

35
Q

What sorts out what information is important and relevant at the time

A

Thalamus

36
Q

where does pathway of discriminative sensation occur

A

dorsal medial lemniscal (cross over occurd at brain stem medulla)

37
Q

where does pathway of pain/temp sensation occur

A

spinothalamic tract (crosses over in spinal cord)

38
Q

where does discriminative info decussate

A

internal arcuate fibres

39
Q

what are the 5 basal ganglia

A

caudate nucleus
putamen
globus pallidus
subthalamic nucleus
substantia nigra

40
Q
A