Sulci

Question 1

3 sulci

Answer 1

1. Central (Rolando) sulcus
2. Lateral (sylvius) fissure
3. Parietal-occipital

Question 2

Central sulcus

Answer 2

1. Runs obliquely across lateral surface
2. Upper end usually cuts in superior border of hemisphere and extends a little on its medial surface
3. Separates motor from sensory areas

Question 3

Lateral fissure

Answer 3

1. Its stem begins on inferior surface
2. Extends lateral between temporal pole and orbital surface of frontal lobe
3. Reach lateral surface and divides into 3 rami

Question 4

3 rami

Answer 4

1. Posterior ramus
2. Anterior horizontal ramus
3. Anterior ascending ramus

Question 5

Posterior ramus

Answer 5

1. Longest and deepest
2. Runs backwards
3. Posterior end turns upwards into parietal lobe

Question 6

Anterior horizontal ramus

Answer 6

Runs forwards in frontal lobe

Question 7

Anterior ascending ramus

Answer 7

Runs upwards in frontal lobe

Question 8

Parieto-occipital

Answer 8

1. Present on medial surface near occipital pole
2. Upper end cuts superior border 2 inches in front of occipital pole
3. Extends a little on lateral surface of hemisphere