UNIT 3 - KA2 Flashcards

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1
Q

What is the human brain

A

The human brain is a large organ made of billions of neurons

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2
Q

Which interconnected layers is the brain organised into

A
  • the central core
  • the cerebral cortex
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3
Q

What does the central core of the brain contain

A
  • the medulla
  • the cerebellum
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4
Q

Medulla

A

The medulla regulates the basic processes of breathing, heart rate and sleep

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5
Q

Cerebellum

A

The cerebellum controls balance, posture and movement

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6
Q

What is the cerebral cortex

A

The cerebral cortex is the centre of conscious thought. It also recalls memories and alters behaviours in the light of experience

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7
Q

What is the cerebral cortex split into

A

It is split by a deep cleft into two halves called cerebral hemispheres.

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8
Q

Where is information from one side of the body processed

A

Information from one side of the body is processed in the opposite side of the cerebrum

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9
Q

Where is information from one side of the body processed

A

Information from one side of the body is processed in the opposite side of the cerebrum

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10
Q

Which information does the left cerebral hemisphere deal with

A

The left cerebral hemisphere deals with information from the right visual field and controls the right side of the body

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11
Q

Which information does the right cerebral hemisphere deal with

A

The right cerebral hemisphere deals with information from the left visual field and controls the left side of the body

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12
Q

What is the function of the cerebrum /cerebral cortex

A

Largest part of the brain, made of two hemispheres. The centre of conscious thought. It receives sensory information, coordinates voluntary movement, makes decisions , recalls memories and alters behaviour in the light of experience.

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13
Q

What is the function of the corpus callosum

A

Bundle of nerve fibres that links the two cerebral hemispheres and allows exchange of information between them

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14
Q

What are the three types of functional area which perform their own particular function distinct from other areas.

A

Sensory, association, motor

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15
Q

What are the 3 types of functional area the cerebrum has

A
  1. Sensory
  2. Association
  3. Motor
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16
Q

Sensory

A

Receives information as sensory impulses from the body’s receptors

17
Q

Association

A

Analyse and interpret these impulses and takes decisions if necessary

18
Q

Motor

A

Receives information from the association areas ans send motor impulses to appropriate effector (send orders to muscles/gland)

19
Q

What are distinct association areas in the cerebrum involved in

A
  • language processing
  • personality
  • imagination
  • intelligence
20
Q

Where is the speech motor area normally

A

The speech motor area is normally on the left side of the brain j

21
Q

Which type of person Is a split brain patient

A

A person whose corpus callosum is cut is said to be a split brain patient

22
Q

Why can exchange of information not take place in split brain patients

A

The exchange of information between the cerebral hemispheres cannot take place because the corpus callosum is severed and only half the field of view is recognised

23
Q

What would a split brain patient say what they see

A

If they were asked to say what they see they would say ‘. ‘ as this word is in the right visual field, seen by the right eye and processed in the left cerebral hemisphere. The speech area is also located within the left cerebral hemisphere

24
Q

What would a split brain patient pick up

A

If they were asked to pick up the object that matched what they saw with their left hand they would pick up ‘ ‘ this is because the word ‘. ‘ is seen by the left eye and processed by the right cerebral hemisphere which controls movement of left hand