Sulci And Gyri Of Cerberal Cortex: Tentorial And Medial Surfaces

Question 1

Sulci

Answer 1

1. Callosal sulcus
2. Hippocampal sulcus
3. Cingulate sulcus
4. Calcarine sulcus
5. Postcalcarine sulcus
6. Parieto-occipital sulcus
7. Collateral sulcus
8. Rhinal sulcus
9. Occipito-temporal sulcus

Question 2

Callosal and hippocampal sulci

Answer 2

1. Callosal begins below corpus callosum rostrum
2. Arches around genu and body
3. Finally bends around splenium to become continuous with hippocampal sulcus
4. Hippocampal sulcus extends forwards from splenium to the bend between parahippocampal gyrus and uncus

Question 3

Cingulate sulcus

Answer 3

1. Begins below corpus callosum rostrum
2. Passes above and parallel to Callosal sulcus
3. Ends posterior by dividing into marginal and subparietal (suprasplenial) sulci

Question 4

Calcarine sulcus

Answer 4

1. Begins below corpus splenium
2. Passes backwards and upwards to meet postcalcarine sulcus

Question 5

Postcalcarine sulcus

Answer 5

1. Begins at occipital pole
2. Passes forwards and upwards to meet Calcarine sulcus

Question 6

Parieto-occipital sulcus

Answer 6

1. Begins at junction of Calcarine and Postcalcarine sulci
2. Passes upwards
3. Forms y shaped sulcus with Calcarine and Postcalcarine sulci

Question 7

Collateral sulcus

Answer 7

Extends from occipital pole to temporal pole

Question 8

Rhinal sulcus

Answer 8

Extends forwards from a point near collateral sulcus anterior end to complete uncus outline

Question 9

Occipito-temporal sulcus

Answer 9

Interrupted sulcus lateral and parallel to collateral sulcus

Question 10

Gyri

Answer 10

1. Lingual gyrus
2. Cuneus gyrus
3. Precuneun gyrus
4. Paracentral lobule
5. Medial frontal gyrus
6. Cingulate gyrus
7. Parahippocampal gyrus and uncus
8. Medial occipito-temporal gyrus (fusiform)
9. Lateral occipito-temporal gyrus

Question 11

Lingual gyrus

Answer 11

1. Between Calcarine and posterior Calcarine sulci (superior) and collateral sulcus posterior part (inferior)
2. Anterior, continuous with parahippocampal gyrus in

Question 12

Cuneus

Answer 12

Triangular area between Postcalcarine and parieto-occipital sulci

Question 13

Precuneus

Answer 13

Quadrilateral area between marginal sulcus (in front), parieto-occipital sulcus (behind), upper border (above), and subparietal sulcus (below)

Question 14

Paracentral lobule

Answer 14

Quadrilateral area surrounding upper end of central sulcus on medial surface

Question 15

Medial frontal gyrus

Answer 15

In front of Paracentral lobule

Question 16

Cingulate gyrus

Answer 16

1. Between cingulate and Callosal sulci
2. Posterior, continuous with parahippocampal gyrus and uncus through isthmus of limbic lobe

Question 17

Parahippocampal gyrus and uncus

Answer 17

1. Between hippocampal and collateral sulci
2. Anterior end forms sulcus

Question 18

Medial occipito-temporal gyrus

Answer 18

Between collateral and occipito-temporal sulci

Question 19

Lateral occipito-temporal gyrus

Answer 19

1. Lateral to occipito-temporal sulcus
2. Represents inferior temporal gyrus from below