Neuroanatomy: Cerebrum

Question 1

C-shaped CSF-filled cavities within each cerebral
hemisphere.

Answer 1

Lateral Ventricles

Question 2

Communication between hemispheres.

Answer 2

Commissural fibres

Question 3

Communication between parts in one hemisphere.

Answer 3

Association fibres

Question 4

Communication between the cerebral cortex with
more caudal structures in the central nervous
system, like the thalamus, brainstem, and spinal
cord.

Answer 4

Projection fibres

Question 5

A deep median cleft separating the right and left
cerebral hemispheres.

Answer 5

Longitudinal fissure

Question 6

Name the 4 borders of the cerebrum.

Answer 6

Superomedial border
Inferolateral border
Inferomedial border

Question 7

Name the 3 surfaces of the cerebrum.

Answer 7

• Superomedial surface
• Medial surface
• Inferior surface

Question 8

Name the 3 poles.

Answer 8

• Frontal pole
• Occipital pole
• Temporal pole
  No parietal pole!

Question 9

Name the 4 lobes of the cerebrum.

Answer 9

• Frontal lobe
• Parietal lobe
• Occipital lobe
• Temporal lobe

Question 10

Sulcus separating the frontal and parietal lobes.

Answer 10

Central sulcus

Question 11

Sulcus separating the temporal and parietal lobes.

Answer 11

Lateral sulcus
(only visible on the superolateral surface of the cerebrum)

Question 12

Sulcus on medial surface between parietal and
occipital lobes.

Answer 12

Parieto-occipital sulcus

Question 13

Area of cerebral cortex anterior to the central
sulcus.

Answer 13

Frontal lobe

Question 14

Area of cerebral cortex posterior to the central
sulcus to parieto-occipital sulcus.

Answer 14

Parietal lobe

Question 15

Area below the lateral sulcus.

Answer 15

Temporal lobe

Question 16

Superior & inferior temporal sulci divide the
temporal lobe into ________ gyri.

Answer 16

Superior, middle & inferior
temporal

Question 17

The occipital lobe is divided into superior and
inferior occipital gyri by the _______ sulcus.

Answer 17

Lateral occipital

Question 18

Groove located in the occipital cortex.

Answer 18

Lunate sulcus

Question 19

Sulcus continuous with the posterior end of the
occipital ramus of the intraparietal sulcus, and runs across the upper part of the occipital lobe, a short distance behind the parietooccipital sulcus.

Answer 19

Transverse occipital sulcus

Question 20

A small region of the cerebral cortex located deep
within the lateral sulcus, covered by the portions of
the frontal, parietal, and temporal lobes. It forms
part of the limbic system.

Answer 20

Insula

Question 21

Sulcus from the front of genu, running backwards
parallel to upper margin of cerebral cortex.

Answer 21

Cingulate sulcus

Question 22

Sulcus below splenium, running towards the
occipital pole.

Answer 22

Calcarine sulcus

Question 23

Sulci below the genu.

Answer 23

Small anterior & posterior
paraolfactory sulci

Question 24

Sulcus separating the cingulate gyrus from the
cerebral cortex.

Answer 24

Callosal sulcus

Question 25

Gyrus between the cerebral cortex & cingulate sulcus.

Answer 25

Cingulate gyrus

Question 26

Continuation of the precentral and postcentral gyri of the superolateral surface into the medial surface of cerebral hemisphere.

Answer 26

Paracentral lobule

Question 27

Quadrangular area between the suprasplenial sulcus & superomedial border.

Answer 27

Precuneus

Question 28

Triangular area between the parieto-occipital sulcus & calcarine sulcus.

Answer 28

Cuneus

Question 29

Gyrus lying between the anterior & posterior paraolfactory sulci.

Answer 29

Paraolfactory gyrus

Question 30

Gyrus below the calcarine sulcus.

Answer 30

Lingual gyrus

Question 31

An anteroposterior sulcus found close to the medial border of the orbital surface. The olfactory tract lies within this sulcus.

Answer 31

Olfactory sulcus

Question 32

The _______ is located at the most medial margin of the inferior surface of the frontal lobe.

Answer 32

Gyrus rectus or Straight gyrus

Question 33

The orbital surface is divided by a H-shaped _______ into anterior, posterior, medial and lateral orbital gyri.

Answer 33

Orbital sulcus

Question 34

Sulcus running antero-posteriorly on the medial aspect of the inferior cerebral surface.

Answer 34

Collateral sulcus

Question 35

Sulcus running antero-posteriorly on the lateral aspect of the inferior cerebral surface.

Answer 35

Occipitotemporal sulcus

Question 36

The most medial part of the temporal lobe.

Answer 36

Uncus

Question 37

Gyrus located medial to the collateral sulcus. It is joined to the cingulate gyrus via the isthmus.

Answer 37

Para-hippocampal gyrus

Question 38

Gyrus located lateral to collateral sulcus.

Answer 38

Medial & lateral occipitotemporal gyri

Question 39

A part of the hippocampal formation, a group of structures that lie in the medial temporal lobe.

Answer 39

Dentate gyrus

Question 40

A detailed topographically organized map of the opposite half of the body.

Answer 40

Homunculus

Question 41

Motor areas (Primary motor cortex)

Answer 41

Pre-central gyrus

Question 42

Sensory areas (Primary somatosensory cortex)

Answer 42

Postcentral gyrus

Question 43

Speech (Broca’s area/ motor speech)

Answer 43

Lies just above the lateral sulcus in the frontal lobe Function: Speech production

Question 44

Auditory (Primary auditory area)

Answer 44

* Lies on superior temporal gyri * Precise location: Heschls convolutions * Auditory association area: Wernicke’s area surrounding and posterior to the primary auditory area Function: Comprehension of speech and language

Question 45

Vision (Primary visual area)

Answer 45

* Situated on the posterior pole and medial aspect of the cerebral hemisphere in the occipital lobe. * Precise location: region of the calcarine sulcus