UNIT 3 - KA2

Question 1

What is the human brain

Answer 1

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

Question 2

Which interconnected layers is the brain organised into

Answer 2

• the central core
• the cerebral cortex

Question 3

What does the central core of the brain contain

Answer 3

• the medulla
• the cerebellum

Question 4

Medulla

Answer 4

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

Question 5

Cerebellum

Answer 5

The cerebellum controls balance, posture and movement

Question 6

What is the cerebral cortex

Answer 6

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

Question 7

What is the cerebral cortex split into

Answer 7

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

Question 8

Where is information from one side of the body processed

Answer 8

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

Question 9

Where is information from one side of the body processed

Answer 9

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

Question 10

Which information does the left cerebral hemisphere deal with

Answer 10

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

Question 11

Which information does the right cerebral hemisphere deal with

Answer 11

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

Question 12

What is the function of the cerebrum /cerebral cortex

Answer 12

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.

Question 13

What is the function of the corpus callosum

Answer 13

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

Question 14

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

Answer 14

Sensory, association, motor

Question 15

What are the 3 types of functional area the cerebrum has

Answer 15

1. Sensory
2. Association
3. Motor

Question 16

Sensory

Answer 16

Receives information as sensory impulses from the body’s receptors

Question 17

Association

Answer 17

Analyse and interpret these impulses and takes decisions if necessary

Question 18

Motor

Answer 18

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

Question 19

What are distinct association areas in the cerebrum involved in

Answer 19

• language processing
• personality
• imagination
• intelligence

Question 20

Where is the speech motor area normally

Answer 20

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

Question 21

Which type of person Is a split brain patient

Answer 21

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

Question 22

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

Answer 22

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

Question 23

What would a split brain patient say what they see

Answer 23

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

Question 24

What would a split brain patient pick up

Answer 24

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