Gross Brain

Question 1

___________ are tissue membranes that serve to support and protect the brain and act as fluid boundaries

Answer 1

Meninges

Question 2

Pachymeninx

Answer 2

another name for Dura Mater

Question 3

Dura Mater

Answer 3

Two layers. Outer is endosteum of skull, Inner is meningeal layer. Two dural layers separate to form venous sinuses. May reflect on itself to form dura septae.

Question 4

Arachnoid

Answer 4

Thin layer that adheres tightly to inside of dura

Question 5

Arachnoid Trabeculae

Answer 5

filaments of arachnoid that extend internally to terminate on the surface of the next layer

Question 6

Pia Mater

Answer 6

the layer that immediately covers the brain.

It extends to the depths of the sulci and follows blood vessels into the substance of the brain

Question 7

Leptomeninges

Answer 7

a collective name for the arachnoid

and pia

Question 8

Dural Septae consists of

Answer 8

Falx Cerebri and Tentorium Cerebelli

Question 9

Tentorium Cerebelli

Answer 9

The tentorium separates the cerebellum below
from the occipital lobe above.
The tentorium extends around the brainstem. The
opening created by the brainstem is called the tentorial incisure (notch)

Question 10

The Skull floor contains 3 depressions

Answer 10

Anterior cranial fossa
Middle cranial fossa
Posterior cranial fossa

Question 11

Tentorium Cerebelli divides the cranial cavity into the

Answer 11

Supratentorial space

Infratentorial space

Question 12

occupies the upper edge of

the falx cerebri

Answer 12

Superior Sagittal Sinus

Question 13

the potential space between the skull and

the dura mater.

Answer 13

Epidural Space

Question 14

the potential space beween the dura

mater and the arachnoid

Answer 14

Subdural Space

Question 15

the space between the layer of arachnoid and the pia mater.

Answer 15

Subarachnoid Space

Question 16

Cerebrospinal fluid (CSF) is produced by vascular tufts located in

Answer 16

the lateral and 3rd and 4th ventricles

Question 17

CSF exits the ventricular system into the

Answer 17

Subarachnoid Space

Question 18

CSF is reabsorbed into the superior sagittal sinus through the

Answer 18

Arachnoid Granulations

Question 19

The optic nerve is a _____ within the brain

Answer 19

Tract

Question 20

The ___________ ______extends along the optic nerve to the back of the eye.

Answer 20

Subarachnoid Space

Question 21

hydrocephalus

Answer 21

an abnormal increase in CSF pressure. Reflected by changes in optic papilla

Question 22

Epidural Hematoma

Answer 22

the result of blood entering the epidural space; often the result of damage to the middle meningeal artery

Question 23

Subdural Hematoma

Answer 23

the result of blood entering the subdural space; often the result of damage to small veins that cross from the brain to the venous sinuses

Question 24

The Brain is supplied by:

Answer 24

Internal carotid artery

Vertebral artery

Question 25

The vertebral arteries merge at the _____________

junction to form the ________ artery.

Answer 25

Pontomedullary, basilar

Question 26

The _________ _________ ________arrives in the vicinity of the diencephalon

Answer 26

Internal Carotid Artery

Question 27

Cerebral arterial circle of Willis

Answer 27

a union of the vertebral-basilar system and the internal carotid system

Question 28

90% of aneurysms are

Answer 28

Congenital

Question 29

If aneurysms rupture they allow blood to enter:

Answer 29

the Subarachnoid space

Question 30

Blood is supplied to the lateral aspect of the brain by

Answer 30

Middle cerebral artery
Anterior cerebral artery
Posterior cerebral artery

Question 31

Blood is supplied to the medial aspect of the brain by

Answer 31

Anterior cerebral artery

Posterior cerebral artery