The Lobes Of The Brain

Question 1

What are the ‘ridges’ in the cerebral cortex called?

Answer 1

Gyri
Gyri increase the surface area of the cortex.

Question 2

What are the ‘valleys’ in the cerebral cortex called?

Answer 2

Sulci/sulcus.

Question 3

What is the primary function of the frontal lobes?

Answer 3

Controls high-level cognitive functions
Examples include planning and decision-making.

Question 4

What percentage of the human cortex do the frontal lobes make up?

Answer 4

40%
Frontal lobes are located at the front (anterior) of the brain.

Question 5

What area in the frontal lobe is responsible for voluntary movements?

Answer 5

Motor cortex - one in each hemisphere

Question 6

What is Broca’s area responsible for?

Answer 6

Speech production
Damage to this area causes Broca’s aphasia.

Question 7

What do the parietal lobes contain? And what is it for?

Answer 7

Somatosensory cortex
This cortex processes sensory information from the skin.

Question 8

What does the somatosensory cortex process?

Answer 8

Sensory information from the skin
Includes touch, temperature, and pressure.

Question 9

What area of the somatosensory cortex reflects a body part’s sensitivity?

Answer 9

The area devoted to that body part
Neurons from the face and hands take up over half the somatosensory cortex.

Question 10

Where are the temporal lobes located?

Answer 10

Beneath the lateral sulcus
They contain the auditory cortex.

Question 11

What does the auditory cortex deal with?

Answer 11

Sound information
Mainly from the opposite ear.

Question 12

What is the role of the temporal lobes in language?

Answer 12

Understanding language
They process location, volume, and pitch of sounds.

Question 13

What area in the left temporal lobe is responsible for language comprehension?

Answer 13

Wernicke’s area
Damage leads to Wernicke’s aphasia.

Question 14

What is the primary visual cortex known as?

Answer 14

V1
It is located in the occipital lobes.

Question 15

What happens to visual information from the right field of vision?

Answer 15

Processed by the left visual cortex
This information is then shared with the right visual cortex.

Question 16

What is Broca’s aphasia characterized by?

Answer 16

Slow, laborious speech
This condition results from damage to Broca’s area.

Question 17

What is Wernicke’s aphasia characterized by?

Answer 17

Fluent but meaningless speech
This occurs due to damage in Wernicke’s area.