Anatomy CORTEX

Question 1

How many lobes in the brain?

Answer 1

6 lobes

Frontal, Parietal, Temporal, Occipital, Insula, Limbic

Question 2

Border between frontal and parietal lobe?

Answer 2

Central sulcus

Question 3

Border Frontal - temporal ?

Answer 3

Sylvian fissure

Question 4

Anterior border of occipital lobe?

Answer 4

Parieto-occipital sulcus superiorly

Pre-occipital notch/incision inferiorly

Question 5

Name the sulcus between the superior and inferior parietal lobule?

Answer 5

Intraparietal sulcus

Question 6

Parietal lobe gyri on the lateral surface

Answer 6

Post central gyrus
Superior Parietal lobule
Inferior parietal lobule

Question 7

Gyri of the inferior parietal lobule

Answer 7

Supramarginal gyrus

Angular gyrus

Question 8

How does the pre-occipital notch look on CT/MR

Answer 8

Bone thickening and veins anteriorly

Question 9

Name 3 lobes of the lateral surface of the occipital lobe

Answer 9

Superior, Middle, Inferior

Question 10

Location of supramarginal gyrus

Answer 10

Inferior parietal lobule. Sits like a horseshoe on Sylvian fissure

Question 11

Location of angular gyrus

Answer 11

Inferior parietal lobule.Sits like a horseshoe on Superior temporal sulcus

Question 12

Paracentral lobule lobes

Answer 12

Anterior paracentral lobule frontal lobe

Posterior paracentral lobule parietal lobe

Question 13

What is P1 called laterally and medial surface?

Answer 13

Convexity called Superior parietal lobule

Medial surface called Precuneus

Question 14

Name the occipital lobes medial surface

Answer 14

Cuneus, Lingual gyrus seperated by calcarine sulcus

Question 15

Inferior surface of temporal lobe

Answer 15

Inferior temporal/occipital gyrus
Lateral O-T gyrus (Fusiform)
Medial O-T gyrus (Parahippocampal + Lingual gyrus)

Question 16

Parts of the Central Region

Answer 16

Precentral gyrus
Postcentral gyrus
Subcentral gyrus
Paracentral lobule

Question 17

Motor strip

Answer 17

Precentral gyrus motor

Postcentral gyrus sensory

Question 18

What are the cerebral landmarks to identify the central sulcus?

Answer 18

Axial 4 [ L, Knob, thickeness, Bracket]

Sagittal 3 [Medial Sagittal, Hook. Lateral sagittal]

Question 19

At what level do you see the Hook of the precentral gyrus?

Answer 19

At the level of the insula

Question 20

What is the pars bracket?

Answer 20

Pars marginalis = Ascending ramus of cingulate sulcus

Question 21

Steps of the 3rd Sagittal Landmark?

Answer 21

Sylvian Fissure
Anterior horizontal ramus
Anterior ascending ramus
Indicate Inferior frontal sulcus
The M is the inferior frontal gyrus
Precentral suclus
Central sulcus

Question 22

Parts of the M of inferior frontal gyrus

Answer 22

Pars orbitalis
Pars triangularis
Pars opercularis

Question 23

Where is Broca’s area located?

Answer 23

Pars opercularis but variants Motor speech production

Question 24

What is the importance of Heschl’s gyrus?

Answer 24

Primary auditory area

Question 25

Landmarks of Heschl’s gyrus

Answer 25

Adhaesio interthalamica

Internal cerebral veins

Question 26

Importance of calcarine sulcus?

Answer 26

Primary visual cortex around it

Question 27

Cells type of primary visual cortex?

Answer 27

Visual stria of Genari (striate cortex)

Question 28

Parts of Lazy Y

Answer 28

Parieto-occipital sulcus continues as anterior calcarine so calcarine sulcus meets them in the middle

Question 29

What is interesting about the cytoarchitectonic variations?

Answer 29

They can be very variable but always on the structure that we describe (Broca’s, Heschl’s, Calcarine sulcus)