Veins of the Head and Neck Flashcards
Supraorbital vein anastomoses with branches of the ___
Superficial temporal vein. The supraorbital vein runs over the supraorbital margin, laterally, to join up with the superficial temporal vein.
Branches of the supraorbital vein
- Palpebral- drain blood from eyelids.
- Diploic veins- drain from the diploe in forehead.
- Frontal- drains from scalp of forehead
* **4. Communication vein enters the orbital septum to become the superior root of the superior ophthalmic vein.
The communication vein branches off which major vein
Branches off the supraorbital vein. continues to enter the orbital septum and become to superior root of the superior ophthalmic.
Termination of the supraorbital vein
When it joins with the supratrochlear aka frontal vein to form the angular vein.
Which two veins join to form the superior ophthalmic vein
The angular becomes the inferior root (via the angular communication vein) and the supraorbital becomes the superior root (via the communication vein)
The supraorbital and supratrochlear (frontal) veins join to form what
When they join, they terminate and form the angular vein. So the angular vein begins at the junction of the supraorbital and supratrochlear near the medial eyelid.
Facial vein forms the common facial trunk with the retromandibular and then drains into ___
The internal jugular.
Which two veins join to form the retromandubular vein
Superficial temporal vein and the maxillary vein
Branches of the superficial temporal vein
Frontal- drains anterior scalp
Parietal- Receives an emissary vein from the superior sagittal sinus.
Transverse Facial
Middle temporal- Exits from under temporalis
Where does the superficial temporal vein terminate
In the parotid gland as it joins with the maxillary vein to form the retromandibular vein.
Anterior and posterior branches of the retromandibular veins
Inverted Y shape.
Anterior branch joins the facial vein to form the common facial trunk which empties into the internal jugular.
Posterior branch joins the posterior auricular/occipital to form the external jugular vein.
Posterior auricular vein has a mastoid emissary vein that connects to which dural venous sinus?
The sigmoid dural venous sinus
Which emissary vein connects pterygoid venous plexus and cavernous sinus?
The inconstant emissary vein of vesalius
Where is the pterygoid venous plexus located?
Within the infra temporal fossa. Makes up the deep veins of the face.
Emissary veins do what
Connect extra cranial (pterygoid plexus, diploic, or scalp veins) to the intracranial drainage system (cavernous sinus).
Can carry infection into the cranium,
All dural sinuses are considered to be ___
But not all sinuses in the head are ____
Venous
Veins
Dura mater divided into two layers
Outer endosteal - Continuous with periosteum of the scalp.
Inner meningeal - Continuous with epineurium that surrounds the spinal and cranial nerves.
In between the layers is where the dural sinus is located.
Greater cerebral vein joins ___ to form the straight sinus
Inferior sagittal sinus
Where is the confluence of sinuses located
Located inner to the internal occipital protuberance
Straight sinus drains where
Into left or right transverse sinuses
The transverse sinuses turn inferiorly to become to
Sigmoid sinuses
The sigmoid sinuses exit the skull via the _____ to form the ____ veins.
Exit via the jugular foramen to form the internal jugular veins. The inferior petrosal then drains into the internal jugular vein and not into the sigmoid sinus
The inferior petrosal veins drain into what
The internal jugular, not the sigmoid sinuses
Venous blood from the cavernous sinus drains where
Into the inferior and superior petrosal into the internal jugular.
Into the pterygoid venous plexus
Can a thrombus caused by bacteria be transferred from one part of the cavernous sinus to the other?
Yes, the anterior and posterior portions of the cavernous sinus surrounding the sella turcica connect.
The cavernous sinus is a large sac-like venous vessels that are subdivided by thin ____
Trabeculae, which give it a spongy appearance.
Where does the cavernous sinus extend from and which nerves and arteries travel though
Extends from the superior orbital fissure to the apex of the petrous temporal bone.
Inlcudes CN III, IV, V1, V2, and VI.
Which veins drain into the cavernous sinus
The superior and inferior ophthalmic vein, sphenoparietal sinus and the inferior cerebral veins.
