Meninges

Question 1

Where do you take a pulse

Answer 1

At the bifurcation of the carotid and medial tot he sternocleidomastoid

Question 2

What veins form the superior vena cava

Answer 2

Subclavian+internal jugular=brachiocephalic

Brachichephalic+brachicephalic=superior vena cava

Question 3

Where does the internal carotid artery pass through s it maes its turn and what is the turn called

Answer 3

The carotid siphon and it passes through the cavernous sinus

Question 4

Where does the internal carotid artery enter the skull

Answer 4

The carotid canal and the foramen lacerum

Question 5

Where does the vertebral artery enter the skull

Answer 5

The foramen magnum

Question 6

What is the inner folding of the dura called that contains makes up the boundaries to the venous sinus

Answer 6

The falx cerebri

Question 7

Falx cerebri definition

Answer 7

Sickle shaped between the two hemispheres; attached anteriorly tot he crista galli of the ethmoid and posteriorly it blends into the tentorium cerebelli

Question 8

Falx cerebelli definition

Answer 8

Smaller extension between cerebellar hemispheres along the posterior wall of the cranium

Question 9

Tentorium cerebelli definition

Answer 9

Forms the roof of the posterior cranial fossa

Question 10

Diaphragms sella

Answer 10

Fold over the sella turcica

Question 11

Tentorial notch

Answer 11

Opening for the brainstem

Question 12

Superior Sagittarius sinus location and what veins feed it

Answer 12

Upper border of falx cerebri and blood from the superior cerebral veins through bridging veins11!!!

Question 13

Inferior Sagittarius sinus location

Answer 13

Lower border of the falx cerebri, joins the great cerebral vein, and forms the straight sinus

Question 14

Straight sinus location

Answer 14

At the junction of the falx cerebri and the tentorium. Can join the superior Sagittarius sinus at the confluens of sinuses

Question 15

Transverse and sigmoid sinuses

Answer 15

Yea

Question 16

Cavernous sinuses locations and clinical relavence

Answer 16

In the middle of the cranial fossa, nd connected by the intercavernous sinuses. They receive blood from the superior and inferior ophthalmic veins and drain to the superior and inferior Petrosal sinuses

Infection can spread from the face to the cavernous sinus via anastomoses of the ophthalmic veins and facial veins

Question 17

What do the superior and inferior Petrozavodsk sinuses drain to

Answer 17

The internal jugular

Question 18

What structures pass through the wall of the cavernous sinus

Clinical correlation

Answer 18

Internal carotid artery, CN 3,4,V1,V2,6.

Infection sign is blurred vision

Question 19

Where is CSF made and where does it flow out

Answer 19

The choroid plexus and it flows our of the brain to the subarachnoid space

Question 20

Where is CSF reabsorbed and what is the clinical correlation

Answer 20

It re absorbs into the venous sinuses at the arachnoid vili which can become calcified, which reduces reabsorption and can produce communicating hydrochephalus

Question 21

Epidural hematoma definition and arteries that are typically affected

Answer 21

Bleeding between the dura and the bone

Middle meningeal artery

Question 22

Epidural hematoma
How does it typically occur
What does it do
Clinical presentation

Answer 22

Occurs from a skull fracture at the pterion

The fracture causes a tear in the middle meninges like artery which builds pressure and pees the dura from the bone

Clinically presents as a bioconversion mass on the CT and the patient is lucid at first and can be fatal within hours

Question 23

What are the herniations called as the result of a hematoma

Answer 23

Uncalled herniation-pushed temporal lobe through the tentorial notch

Tonsillar herniation-push the cerebellum through the foramen magnum

Question 24

Subdural hematoma definition

Answer 24

Bleeding into space between dura and the arachnoid and can remain undetected

Question 25

Subdural hematoma clinical presentation

Answer 25

The tearing of the bridging veins or the venous sinus can cause a crescent shape on the CT or MRI

Question 26

Subarachnoid hematoma definition

Answer 26

Tearing of the cerebral artery or an aneurysm and can be rapidly fatal if arterial