Sulci And Gyri Of Cerebral Cortex: Inferior Surface

Question 1

Parts

Answer 1

1. Orbital part
2. Tentorial part

Question 2

Orbital part

Answer 2

1. Anterior 1/3 (inferior surface of frontal lobe)
2. Rests on orbit, faces down and lateral

Question 3

Sulci of orbital part

Answer 3

1. Olfactory sulcus
2. Orbital sulcus

Question 4

Olfactory sulcus

Answer 4

Near and parallel to medial border lodging olfactory bulb and tract

Question 5

Orbital sulcus

Answer 5

H shaped
Divides remaining part into 4 orbital gyri

Question 6

Gyri of orbital part

Answer 6

1. Gyrus rectus (straight)
2. Anterior orbital gyrus
3. Posterior orbital gyrus
4. Medial orbital gyrus
5. Lateral orbital gyrus

Question 7

Tentorial part

Answer 7

1. Posterior 2/3 (inferior surface of temporal and occipital lobes)
2. Rests on Tentorium cerebelli, faces down and medial so described with hemisphere medial surface

Question 8

Orbital and tentorial parts are separated by

Answer 8

Lateral fissure stem