Dissection 13

Question 1

What are the two layers of the Dura Mater?

Answer 1

The Periosteal and Meningeal Dura

Question 2

Where are the venous sinuses located?

Answer 2

The Dura mater

Question 3

T/F The epidural space is a potential space

Answer 3

True

Question 4

What is a cistern?

Answer 4

A space between the pia and the arachnoid that is enlarged

Question 5

What is the largest cistern?

Answer 5

The Cisterna Magna

Question 6

Where does the CSF return to the venous circulation?

Answer 6

Arachnoid Granulations

Question 7

What are the functions of the CSF?

Answer 7

delivers nutrients/ removes wastes from the brain tissue and functions in fluid balance and reduces effective weight of the brain

Question 8

How much CSF is produced daily

Answer 8

500ml

Question 9

What is the total CSF volume?

Answer 9

150 ml

Question 10

Where do the dural venous sinuses drain?

Answer 10

The confluence of sinuses

Question 11

The dural sinuses communicate with the scalp via what

Answer 11

Emissary veins

Question 12

What does the cavernous sinus hold?

Answer 12

CN III, IV, VI, V1, V2, and the internal carotid artery

Question 13

What is an arteriovenous fistula?

Answer 13

an abnormal connection between the internal carotid artery and cavernous sinus

Question 14

What is the epidural space?

Answer 14

Contains the arterial blood supply to the dura mater

Question 15

What does the subdural space contain?

Answer 15

Veins

Question 16

What does the subarachnoid space contain?

Answer 16

CSF

Question 17

The Middle Meningeal artery is a branch of _____, runs through _____ and runs in _____

Answer 17

maxillary artery, foramin spinosum, epidural space

Question 18

A subdural Hematoma results from?

Answer 18

Shearing off cerebral veins where they penetrate dura (into the superior sagittal sinus

Question 19

An epidural hematoma results when _____ ruptures and can/can’t cross the midline

Answer 19

middle meningeal; CAN

Question 20

The posterior cranial fossa is covered by?

Answer 20

The tentorium cerebelli

Question 21

The anterior fossa contains what bones?

Answer 21

Frontal, sphenoid, and ethmoid

Question 22

The middle crania fossa contains what bones?

Answer 22

The sphenoid, temporal and parietal

Question 23

The posterior cranial fossa contains what bones?

Answer 23

Temporal, occipital, sphenoid and parietal

Question 24

What CNs pierce the dura mater in the anterior cranial fossa?

Answer 24

CN I

Question 25

What CNs pierce the dura mater in the middle cranial fossa?

Answer 25

CN II

Question 26

What CNs pierce the dura mater in the posterior cranial fossa

Answer 26

CN III-XII

Question 27

The cranial nerve with the longest intradural course is?

Answer 27

CN VI

Question 28

What CNs exit the skull at the anterior cranial fossa

Answer 28

CN I

Question 29

What CNs exit the skull at the middle cranial fossa?

Answer 29

CN II-VI

Question 30

What CNs exit the skull through the posterior cranial fossa?

Answer 30

VII-XII

Question 31

What does the superior orbital fissure contain?

Answer 31

CN III, IV, VI, and V1

Question 32

The Internal Carotid Artery enters the skull through the ______ and passes over the _____ on its way to the cranial cavity

Answer 32

Carotid Canal; Foramen Lacerum

Question 33

What runs through the Foramen Lacerum

Answer 33

Nothing :)

Question 34

What branches ascend through the neck without branching?

Answer 34

vertebral and internal carotid arteries

Question 35

What CN runs through the Posterior Cerebral and Superior Cerebellar arteries?

Answer 35

CN III