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MBCHB3: Nervous system module. > Lecture 1: The Human Brain > Flashcards

Lecture 1: The Human Brain Flashcards

1
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A
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3
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4
Q

What are the major differences between the homonculus on the somatosensory cortex and the primary motor cortex?

A

Somatosensory cortex has:

  • Huge lips, jaw

Motor cortex

  • Huge hand representaiton, face representation
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5
Q

What is brocas area?

A

Motor aspect of speech

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6
Q

What is wernickes area?

A

Sensory aspect of what sound/speech means (not in sensory cortex)

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7
Q

What is exners area?

A

Motor control of hand

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8
Q

What is the function of the supramarginal gyrus?

A

Reading

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9
Q

What is the function of the angular gyrus?

A

Writing

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10
Q

What is the function of the frontal assocatiation cortex?

A

Intelligence, behvaiour, mood, personality

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11
Q

What is the function of the parietal association?

A

Spatial skills, 3D recognition, Shapes/Faces

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12
Q

What is the functional of the temporal association cortex?

A

Memory, Aggression, Intelligence

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13
Q

What are the types of white matter tract fibres?

A

Association fibres

Commissural fibres

Projection fibres

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14
Q

What are association fibres?

A

Connections within the same hemisphere i.e Arcuate fasiculus

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15
Q

What are commisural fibres?

A

Connections between two hemispheres i.e corpus collosum

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16
Q

What are projection fibres?

A

Connections between the brain and spinal cord or muscle

17
Q

What happens when there is a lesion to brocas area?

A

Non-fluent aphasia

i.e cant vocalise but can understand speech (as shown by written resonse)

18
Q

What happens when there is a lesion to wernickes area?

A

Fluent aphasia

Difficulty making sense of language

19
Q

What happens when there is a lesion in the arcuate fasiculus?

A

Hear and understand ok, verbalise ok, answers are completely disconnected from question. Test using other fasiculus i.e written response to speech

20
Q

What is the dominant hemisphere?

A

Some brain areas are found on both sides.

But

Lanauge areas are localised to left side of brain in most people even left handed. Although some left handed have right side dominance.

Left side considered dominant because these areas were discovered first.

21
Q

What is the function of the dorsolateral pre-frontal cortex?

A
  • Reason
  • Morality
  • Right v Wrong
  • Orders best-worst
22
Q

What is the function of the ventro-lateral pre-frontal cortex?

A

Ability to pay attention despite distractions

How you view the world as it changes around you.

23
Q

What is the function of the orbito-frontal pre-frontal cortex?

A
  • Emotion
  • FFF response
  • Reward based decision making

MBCHB3: Nervous system module. (39 decks)

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