Practical 3 - station 4 - cortex

Question 1

What are lobes subdivided into?

Answer 1

Fissures, gyri, sulci

Question 2

What are fissures?

Answer 2

Deep grooves

Question 3

What are gyri?

Answer 3

Elevated folds - ridges

Question 4

What are sulci?

Answer 4

Shallow grooves between folds (gyri)

Question 5

What is the function of fissures, gyri and sulci?

Answer 5

To increase the surface area

Question 6

In general what is each lobe divided into?

Answer 6

3 gyri and 2 sulci

Question 7

Function of the longitudinal fissure

Answer 7

2 cerebral hemispheres

Question 8

Function of the lateral fissure

Answer 8

frontal + parietal lobe from temporal lobe

Question 9

Function of the transverse fissure

Answer 9

cerebellum from cerebrum

Question 10

What does the cerebral cortex allow?

Answer 10

us to be aware of ourselves and our sensations, to communicate, remember, understand and initiate voluntary movments

Question 11

What matter is the cerebral cortex made up of?

Answer 11

Gray matter only

Question 12

What is the significance of contralaterality?

Answer 12

each hemisphere is concerened with sensory and motor functions of the opposite side of the body

Question 13

What does lateralization meant?

Answer 13

2 hemispheres aren’t entirely symmetrical and equal in function

Question 14

Which cortices receive or provide info from or to the body?

Answer 14

Somatosensory - sensory info from body

Motor - motor info to body

Question 15

What does the amount of cortex devoted to an area depend on?

Answer 15

How many receptors there are in the body region it is receiving or sending info to/from