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All 8 branches of the external carotid A in order as it ascends 1.Superior Thyroid. 2.Ascending Pharyngeal. 3.Lingual. 4.Facial. 5.Occipital. 6.Posterior Auricular. 7.Maxillary. 8.Superficial Temporal
What nerve does the Superior thyroid A travel with? Internal branch of Superior Laryngeal N
What Artery comes off the Superior Thyroid A? Superior Laryngeal A
Does the inferior thyroid Vein travel with the inferior thyroid A? No, the inf thyroid A comes off the thyrocervical trunk lateral to the trachea while the veins travel down the midline of the trachea to the bracheocephalics.
What is the only medial branch of the Ext Carotid A? Ascending Pharyngeal A. (2nd branch off the ECA)
Where will you find the Lingual A? (3rd branch off the ECA)Runs with the Hypoglossal nerve (CN XII) deep to stylohyoid and Post. Digastric.
Arteries derived from the facial artery (4th branch off ECA) 1.Inferior Labial A. 2.Superior Labial A. 3.Angular A (stays in the nasal-labial crease)
CN XII exits the skull directly below what artery? Occipital A
Temporal Arteritis Patient presents with scalp/eye pain, extreme head aches, and dilated vasculature in temporal region.
Branches off the Maxillary A 1.Middle Meningeal. 2.Inferior alveolar. 3.Spehnopalatine. 4.Superior Alveolar. 5.Infraorbital. 6.Greater Palatine
What arteries are responsible for nose bleeds? Kiesselbach's plexus: 1.Sphenopalatine A. 2.Superior labial A. 3.Greater Palaine A. 4.Anterior Ethmoid A.
Where does the Middle Meningeal A enter the skull? Foramen Spinosum. It then is found in the grooves on the temporal bones.
Epidural Hematoma Spread of BL from lateral skull blunt trauma is in the epidural space. Movement laterally is limited by dural attachment to inner skull table which causes a midline shift. Therefore they feel initial pain and then a "lucid interval"
Presentation of "normal/textbook" Circle of Willis Only seen in about 20-25% of pop
What Artery runs inferior to CN VI-X? Anterior Inferior Cerebellar A
What Artery runs between CN I and CN II? Anterior Cerebral A
What Artery runs over the Hypoglossal N? Posterior inferior cerebellar A
What CN does the posterior cerebral cross superiorly? CN III oculomotor. **superior cerebellar is just behind and inferior to CN III
Most common site for a Subarachnoid Hemorrhage? Anterior communicating A. (Congenital saccular aneurysm)
How would Patient present with a subarachnoid hemorrhage of Ant comm A? Post comm A? Ant: Worse head ache of their life, vision loss. Post: Worse head ache of their life with occulomotor loss
Subdural hematoma Rupture of Bridging Veins. Delayed onset of symptoms and NO midline shift b/c blood can spread laterally across suture lines. **Seen with SHEARING force (whiplash, shaken baby syndrome)
Danger Triangle The facial v can drain to the cavernous sinus via superior/inferior opthalmic v. Therefore you can infection can spread there causing meningitis.
Emissary Veins Allow infection to spread from the scalp to the cranial cavity. They pass through parietal foramina
Structure located on lateral wall within the cavernous sinus? CN III, IV, V1, V2.
Structures located centrally on either side of the cavernous sinus? CN VI and Internal carotid A
Cavernous Sinus Thrombosis (CST) complication of untreated sinusitis or facial infection. **patien presents with eye swelling, HA, loss of corneal reflex.
Corneal Reflex Poke eye, both eyes blink. Senory arm: V1. Motor arm: VII
Created by: WeeG



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