lecture 6

Question 1

The Telencephalon: forms the cerebral hemispheres in adults and it contain

Answer 1

The cortex
The white matter
The basal nuclei
The lateral ventricles

Question 2

is a deep sulcus, located in the midline and separates the right and left cerebral hemispheres

Answer 2

Longitudinal Cerebral Fissure

Question 3

in the depths of the fissure is the _______ that connects the hemispheres across the midline.

Answer 3

Corpus Callosum

Question 4

is the sulcus that separates the cerebral hemispheres from the cerebellum inferior, it contains the Tentorium Cerebelli

Answer 4

The Transverse Cerebral Fissure

Question 5

is convex and is boundary superiorly by the superior border and inferiorly by the inferolateral border

Answer 5

The superolateral surface

Question 6

is flat and vertical and is separated from the superolateral surface by the superior border, inferiorly it continues with the basal or inferior surface.

Answer 6

The Medial surface

Question 7

is separated from the superolateral surface by the inferior border

Answer 7

The basal surface

Question 8

is a sharp border situated near de midline that separates the superolateral surface from the medial surface

Answer 8

The superior or superomedial border

Question 9

is a round border that separated the superolateral surface from the basal surface.

Answer 9

inferior or inferolateral border

Question 10

it runs downward and forward across the superolateral surface.

Answer 10

Central Sulcus

Question 11

is a deep cleft situated on the inferior and lateral surfaces of the cerebral hemispheres. It separates the frontal and parietal lobes above from the temporal lobe below.

Answer 11

Lateral Sulcus (Sylvius)

Question 12

occupies the area anterior to the central sulcus and superior to the lateral sulcus.

Answer 12

Frontal Lobe

Question 13

The inferior frontal gyrus is composed of three parts:

Answer 13

the pars orbitalis (anteriorly),
the pars triangularis (middle) and the
pars opercularis (posteriorly)

Question 14

The pars opercularis of the inferior frontal gyrus in the dominant hemisphere often includes the motor speech area commonly known as

Answer 14

Broca’s area

Question 15

which is the largest commissure of the brain, forms a striking feature on this surface

Answer 15

The corpus callosum

Question 16

begins beneath the anterior end of the corpus callosum and continues above the corpus callosum until it reaches its posterior end

Answer 16

The Cingulate gyrus

Question 17

The large area lateral to the olfactory sulcus is called

Answer 17

orbital gyri

Question 18

The inferior surface of the frontal lobe possesses the

Answer 18

olfactory sulcus

Question 19

The area between the olfactory sulcus and the cerebral longitudinal fissure is known as the

Answer 19

straight gyrus or gyrus rectus.

Question 20

is the area that surrounds the indentation of the central sulcus on the superior border. It is bounded anteriorly by the paracentral ramus and posteriorly by the marginal ramus of the cingulate sulcus

Answer 20

Paracentral lobule

Question 21

is an area bound anteriorly by the marginal ramus of the cingulate sulcus and posteriorly by the parieto-occipital sulcus.

Answer 21

Precuneus

Question 22

is situated on the inferior surface of the hemispheres. it runs from posterior to anterior parallel to the calcarine sulcus.

Answer 22

The Collateral sulcus:

Question 23

is a triangular area bounded above by the parieto-occipital sulcus, inferiorly by the calcarine sulcus and posteriorly by the superior medial margin or border.

Answer 23

Cuneus

Question 24

lies between the collateral and calcarine sulci, anteriorly it continuous with the Parahippocampal gyrus that ends as the uncus.

Answer 24

Lingual gyrus

Question 25

The inferior parietal lobe: lies inferior to the intraparietal sulcus. The inferior parietal lobe is comprised of two gyri

Answer 25

supramarginal gyrus, angular gyrus

Question 26

runs parallel to the collateral sulcus.

Answer 26

occipitotemporal sulcus

Question 27

extends from the occipital pole to the temporal pole, lies between the collateral and occipitotemporal sulci.

Answer 27

The medial occipitotemporal gyrus

Question 28

lies lateral to the occipitotemporal sulcus, which is continuous, rounds the infero-lateral margin of the hemispheres with the inferior temporal gyrus.

Answer 28

lateral occipitotemporal gyrus

Question 29

it receives this name because some fibers of the internal capsule pass through and give then the striped appearance

Answer 29

corpus striatum or striated body

Question 30

is situated lateral to the thalamus and is divided by the internal capsule into the

Answer 30

caudate nucleus and the lentiform nucleus.

Question 31

a large C-shaped mass of gray matter that arches superiorly over the thalamus and lies between the lateral ventricle medially and the internal capsule laterally

Answer 31

caudate nucleus (tail-like)

Question 32

is a wedge-shaped mass of gray matter whose broad convex base is directed laterally and its blade medially

Answer 32

lentiform nucleus:

Question 33

is situated in the temporal lobe close to the uncus on the tip of the tail of the caudate nucleus. It has olfactory function.

Answer 33

amygdaloid nucleus or amygdala | Putamen

Question 34

lentiform nucleus is divided into:

Answer 34

Globus Pallidus ,

Question 35

is a thin sheet of gray matter that is separated from the lateral surface of the lentiform nucleus by the external capsule and from the Insula lobe by the extreme capsule.

Answer 35

Claustrum nucleus

Question 36

White matter of the cerebral hemispheres, fibers may be classified into three groups according to their connections

Answer 36

The commissural fibers. The association fibers. The projection fibers.

Question 37

These fibers run between the two hemispheres specifically they interconnect the same gray areas of the right and left hemispheres

Answer 37

commissural fibers

Question 38

connects the right and left amygdalas, the olfactory bulbs, and several cortical regions of the two temporal lobes

Answer 38

anterior commissure:

Question 39

connects the right and left pretectal region and related cell groups of the mesencephalon

Answer 39

posterior commissure

Question 40

joins the right and left hippocampi to one another

Answer 40

fornix

Question 41

connect different part of the same hemisphere. It is divide into short and long groups.

Answer 41

association fibers

Question 42

it lies immediately beneath the cortex and connect neighboring or adjacent cortical areas or gyri.

Answer 42

short association fibers

Question 43

connect widely separated cortical lobes

Answer 43

long association fibers