Mod 5 Anatomy

Question 1

What makes up the Leptomeninx?

Answer 1

pia mater and arachnoid are considered together as a functional unit and contraposed to pachymeninx

Question 2

What is the pachymeninx?

Answer 2

Dura mater, also known as the pachymeninx

Question 3

What is in the subarachnoid space?

Answer 3

CSF

Question 4

Which layer of the Dura adhers to the internal surface of the Cranium?

Answer 4

External Periosteal Layer

Question 5

What is the Falx cerebri ??

Answer 5

Vertical fold of dura that begins anteriorly at the crista galli
- winds around the corpus callosum to the falcotentorial junction on the superior aspect of the tentorium cerebelli

Question 6

Is falx cerebri the same as dura mater?

Answer 6

The falx cerebri is a meningeal projection of dura in the brain. It is a sickle-shaped fold of dura mater located at the midline between the two cerebral hemispheres.

Question 7

What is the tentorium cerebelli?

Answer 7

dura mater that separates the occipital lobes and cereberal hemispheres from the cerebellum

Question 8

The falx cerebelli is ?? and seperates?

Answer 8

The falx cerebelli is a small fold of the meningeal cranial dura mater. It separates the right and left cerebellar hemispheres

Question 9

The falx cerebri separates ? and Houses?

Answer 9

The falx cerebri separates the cerebral hemispheres and houses the dural sinuses, into which the blood and cerebrospinal fluid drain

Question 10

What lies in the longitudinal cerebral fissure?

Answer 10

Falx Cerebri

Question 11

The Falx Cerebri attaches?

Answer 11

In the Median plane, to the internal surface of the Calvaria from the frontal bone, and ethmoid bone, to internal occipital protuberance

Question 12

The Falx Cerebri continues as?

Answer 12

Tentorium Cerebelli

Question 13

What is the largest and second largest dural folds?

Answer 13

Largest- Falx Cerebri, Second- Tentorium Cerebelli

Question 14

What attaches to the Tentorium Cerebelli ?

Answer 14

Falx Cerebri

Question 15

Most of the blood from the brain drains into?

Answer 15

Internal Jugular vein

Question 16

What is the Superior Sagittal sinus?

Answer 16

Begins at the Crista Galli, ends internal occipital protub

Lays in the Falx Cerebrum, Along the Sagittal groove, Drains anterior Cerebral Hemisphere

Question 17

The confluence of sinus’s in the head is a meeting of?

Answer 17

Superior Sagittal
Straight sinus
Occipital sinus
Transverse sinus

Question 18

The Superior Sagittal sinus receives the ______ veins and communiucates on each side through?

Answer 18

Superior Cerebral veins
Lateral venous Lacunae

Question 19

What are Arachnoid Granulations?

Answer 19

Arachnoid sacs that protrude through menengial layer of dura into dural venous sinuses

Question 20

Inferior Sagittal sinus runs? and ends ?

Answer 20

Runs in the inferior concave free boarder of Falx Cerebri ends in straight sinus

Question 21

The straight sinus is formed by?

Answer 21

union of Inf. Sagittal Sinus and Great Cerebral vein

Question 22

Blood received by the confluence of sinuses is drained?

Answer 22

By transverse sinus

Question 23

What nerves pass through the cavernous sinus ? and Mjr Artery?

Answer 23

Oculomotor nerve (CN III)
Trochlear nerve (CN IV)
Ophthalmic nerve (V1), maxillary nerve (V2)
Abducens nerve (CN VI)

Internal Carotid Artery

Question 24

What are the tributaries of the Cavernous sinus?

Answer 24

Ophthalmic vein (Sup/ Inf)
Superficial middle cerebral vein
Inferior cerebral veins
Sphenoparietal sinus
Middle meningeal vein.

Question 25

The cavernous sinuses empty into the ______, and ultimately, into the _______.

Answer 25

The cavernous sinuses empty into the superior and inferior petrosal sinuses, and ultimately, into the internal jugular vein.

Question 26

The left and right cavernous sinuses are connected in the midline by the___________ They travel through the s____of the sphenoid bone.

Answer 26

Anterior and posterior intercavernous sinuses. They travel through the sella turcica of the sphenoid bone.

Question 27

What veins connect the dural venous sinus's with the outside veins of the Cranium?

Answer 27

Emissary Veins

Question 28

Middle Meningeal artery arises from? and Passes where?

Answer 28

Arises from Maxillay artery, passes through infratemporal fossa

Question 29

The Middle Meningeal Artery supplies?

Answer 29

Dura Mater

Question 30

Where does the Middle Meningeal Artery enter the middle cranial fossa?

Answer 30

Foramen spinosum

Question 31

What are the branches of the Middle Meningeal Artery?

Answer 31

Ant/ Post Division with a frontal and parietal branch of the middle Meningeal Artery

Question 32

The Meningeal veins Leave the Cranial cavity through the? and Drain into?

Answer 32

Foramen spinosum and drain into Pterygoid venous plexus

Question 33

What nerves supply the Dura Mater?

Answer 33

(Trigeminal Nerve CNV) V1- Ethmoidal Branch V2 -Menengial branches V3- Mandibular

Question 34

Is the Trigeminal Nerve Sensory or Motor?

Answer 34

Mandibular- V3 is the only branch which contains both sensory and motor components:the Opthalmic (V1) and Maxillary (V2) nerves contain only sensory fibres

Question 35

What does the Tentorial nerve supply sensory info from?

Answer 35

Fall Cerebri, and Tentorium Cerebelli