lecture 7

Question 1

The brain is supplied by the two

Answer 1

internal carotid and the two vertebral arteries.

Question 2

supply all the medial surface of the cerebral cortex as far back as parieto-occipital sulcus.

Answer 2

anterior cerebral artery

Question 3

supply the basal nuclei of the brain and most of the area of the lateral surface

Answer 3

The middle cerebral artery

Question 4

is the most superficial layer attaches to the inner surface of the skull bones

Answer 4

periosteal layer

Question 5

is the dura mater proper, it is a dense, strong fibrous membrane covering the brain, and is continuous through the foramen magnum with the dura mater of the spinal cord.

Answer 5

meningeal layer

Question 6

the meningeal layer sends inward four septa, which divide the cranial cavity into freely communicating spaces that lodge the subdivisions of the brain.
function of these septa is to restrict the displacement of the brain associated with acceleration and deceleration, when the head is moved.

Answer 6

septa of the dura mater

Question 7

is a sickle-shaped fold of dura mater that lies in the midline between the two cerebral hemispheres

Answer 7

Falx Cerebri:

Question 8

small sickle-shaped fold of dura mater attached to the internal occipital crest, projects forward between the two-cerebellar hemispheres

Answer 8

Falx Cerebelli

Question 9

is a small circular fold of dura mater that forms the roof for that sella turcica

Answer 9

Diaphragma Sella

Question 10

A small opening in its center allows passage of the stalk of the

Answer 10

hypophysis cerebri

Question 11

is a crescent-shaped fold of dura mater that roofs over the posterior cranial fossa

Answer 11

The Tentorium Cerebelli

Question 12

are the triangular spaces between the two layers of the dura matter.

Answer 12

Sinuses of the Dura mater

Question 13

These sinuses act as veins collecting blood from the brain and directing it to the

Answer 13

internal jugular veins

Question 14

is a delicate, avascular, impermeable membrane covering the brain, and laying between the pia mater and the dura mater

Answer 14

Arachnoid Mater of the brain:

Question 15

is separated from the dura mater by a potential space, the Subdural space filled by a film of fluid

Answer 15

arachnoid

Question 16

are the knob-like projections into the venous sinuses are must numerous along the superior sagittal sinus

Answer 16

Arachnoid Villi or Granulations

Question 17

is a vascular membrane closely invests the brain, covering the gyri and descending into the deepest sulci.

Answer 17

Pia mater of the brain (gentle mother):

Question 18

is formed mainly in the choroid plexuses of the lateral, third and fourth ventricles

Answer 18

cerebrospinal fluid

Question 19

forms the choroid plexus of the lateral ventricle.

Answer 19

The choroidal artery

Question 20

supply the inferior surface of the Vermis, the central nuclei of the cerebellum and the under surface of the cerebellar hemispheres

Answer 20

posterior inferior cerebellar artery:

Question 21

Dura mater of the brain (tough mother): it surrounds the brain, it has two layer of fibrous connective tissue.

Answer 21

periosteal layer

meningeal layer

Question 22

Dura mater layer has

Answer 22

The septa of the dura mater.

The sinuses of the dura mater

Question 23

occupies the line of junction of the falx cerebri with the tentorium cerebelli.

Answer 23

Straight sinus

Question 24

Straight sinus: It is formed by the union of the

Answer 24

inferior sagittal sinus with the great cerebral veins.

Question 25

are the direct continuations of the transverse sinuses, ending in the jugular foramen.

Answer 25

Sigmoid sinus

Question 26

is small sinus occupying the attached margin of the flax cerebelli.

Answer 26

Occipital sinus:

Question 27

are situated in the middle cranial fossa on each side of the body of the sphenoid bone.

Answer 27

The cavernous sinus

Question 28

runs along the lesser wing of the sphenoid bone.

Answer 28

Sphenoparietal sinus:

Question 29

occupies the superior border of the petrous part of the temporal bone.

Answer 29

Superior Petrosal sinus

Question 30

occupies the inferior border of the petrous part of the temporal bone

Answer 30

Inferior Petrosal sinus:

Question 31

allows the communication between each cavernous sinus

Answer 31

The anterior and posterior intercavernous sinuses:

Question 32

it is separated from the pia mater by the subarachnoid space, which is filled by

Answer 32

Cerebrospinal fluid.

Question 33

The Arachnoid mater has:

Answer 33

Subarachnoid cisternae or cisterns:

The arachnoid Villi or Granulations.

Question 34

The cisterna cerebellomedullaris or cerebellomedullary cistern.
The cisterna interpeduncullaris or interpeduncular cistern.
The Chiasmatic cistern.
The cistern of the Lateral fossa

Answer 34

subarachnoid cisternae

Question 35

cerebrospinal fluid is a filtration of the blood plasma and is absorbed in the

Answer 35

arachnoid villi

Question 36

it join the two anterior cerebral artery

Answer 36

anterior communicating artery:

Question 37

supply the bone and dura mater in the posterior cranial fossa.

Answer 37

meningeal branches

Question 38

supply the inferolateral and medial surface of the temporal lobe and all the occipital lobe.

Answer 38

The posterior cerebral artery

Question 39

supply the anterior and inferior part of the cerebellum.

Answer 39

anterior inferior cerebellar artery