The Cerebral Cortex Unit 3

Question 1

The cerebrum is split into two halves called cerebral hemispheres. What joins the two hemispheres ?

Answer 1

Corpus Callosum

Question 2

Describe the corpus callosum ?

Answer 2

A bundle of nerve fibres that allow communication to flow between the two hemispheres

Question 3

Name the three types of functions that are in the brain

Answer 3

• Sensory area
• Association area
• Motor area

Question 4

Where do the sensory areas of the brain receive information from ?

Answer 4

From sensory nerves coming from the body’s receptors

Question 5

What is the purpose of the association areas ?

Answer 5

They analyse and interpret the impulses received in the sensory areas

Question 6

What is the purpose of the motor areas ?

Answer 6

They receive information from the association areas and send impulses along motor nerves to the appropriate effectors

Question 7

What jobs does the cerebral cortex carry out ?

Answer 7

• Conscious thought
• Controls personality
• Intelligence
• Imagination

Question 8

If a person has their corpus callosum cut out, how is this person described ?

Answer 8

A split-brain patient

Question 9

Whatever areas are found on the left cerebral hemisphere are also found in be right cerebral hemisphere. What is the only type of area that is found on one side only ?

Answer 9

Speech motor area

Question 10

If a patient has the corpus callosum intact and the speech motor area on the left, what will they be able to see and say they can see if they have orange in front of the right eye and blue in front of the left eye ?

Answer 10

Both blue and orange

Question 11

If a patient who has the corpus callosum cut and the speech motor area on the left, what will they be able to see and say they can see if they have orange in front of the right eye and blue in front of the left eye ?

Answer 11

Only orange

Question 12

If a person is asked to point with their right hand to an object, from which cerebral hemisphere will take this message to be sent to control the right hand ?

Answer 12

The left cerebral hemisphere

Question 13

What are the 3 key functions of the cerebral cortex ?

Answer 13

• Receives sensory information
• Co-ordinates voluntary movement
• Making decisions based on experience

Question 14

What does the left cerebral hemisphere deal with ?

Answer 14

Information from the right visual field and controls the right side of the body

Question 15

What does the right cerebral hemisphere deal with ?

Answer 15

Information from the left visual field and controls the left side of the body