Conference 24: Cranial Cavity Flashcards
What veins do the dural venous sinus receive blood from?
- cerebral veins (the brain)
- diploic veins (bone)
- emissary veins (communicate with the skin)
- meningeal vein (meninges)
What structure does the blood from the dural venous sinuses drain into?
internal jugular vein
What is the sinus pathway starting from the Superior Sagittal Sinus ending with the Internal Jugular Vein?
Superior Sagittal Sinus –> Confluence –> Transverse Sinus–> Sigmoid Sinus–> Internal Jugular Vein
What is the sinus pathway starting from the Inferior Sagittal Sinus ending with the Internal Jugular Vein?
Inferior Sagittal Sinus (+great cerebral vein) –> Straight Sinus–> Confluence–> Transverse Sinus –> Sigmoid Sinus–> Internal Jugular Vein
What is the sinus pathway starting from the Cavernous Sinus ending with the Internal Jugular Vein?
- superior petrosal –> sigmoid sinus –> internal jugular
2. inferior petrosal –> internal jugular vein
IF the internal jugular vein was blocked, what other pathway could be used by venous blood exiting the cranial cavity?
emissary veins
how could an infection from the skin beneath the eye spread to an intracranial venous sinus?
facial veins communicate via emissary veins to cavernous sinus
If you have a pt with a skull fracture what main artery should you be concerned about for rupture?
middle meningeal artery
vertebral arteries come up along the vertebral column and form what artery?
basilar artery
What is the branching of the common carotid artery to the brain?
common carotid –> internal carotid –> 1. anterior cerebral artery 2. middle cerebral artery
What would cause enlarged retinal veins and retinal hemorrhage ?
obstruction of intracranial venous drainage from orbit
What are symptoms of a pituitary tumor
diminished visual acuity
