Week 3 Flashcards
Vertebral artery is branch of:
Subclavian Artery
2 branches of vertebral artery
Arterior spinal artery
Posterior spinal arteries
Arteriovenous malformation =
Arteries connected directly to veins
2 pairs of arterial vessels in brain
Internal carotid arteries
Vertebral arteries
Interior carotid artery enters via ___
Foramen lacerum
5 branches of internal carotid artery
Ophthalmic A Posterior communication A Anterior communication A Anterior cerebral A Middle cerebral A
Central artery of the retina is a branch of ____ Artery
Ophthalmic artery
Posterior communicating artery is a common site of
Berry aneurisms
Anterior choroidal artery supplies
Choroid plexus
Anterior cerebral artery originates at ___ of internal carotid artery, lies along the ____ fissure
Supplies ____ area of sensory and motor cortices (paracentral lobule)
Bifurcation
Longitudinal fissure
Leg and foot area
Most COMMON site of berry aneurisms
Anterior communicating artery
_____ artery supplies Broca and Wernicke speech areas.
Middle cerebral artery
Vertebral artery reconnects into ___ at junction of medula and pons
Basilar Artery
Basilar artery split into 5 branches
Pontine A Labyrinthine A Anterior Inferior cerebellar artery Superior cerebellar artery Posterior cerebral artery
Anterior Inferior cerebellar Artery supplies hypothalamospinal tract (___)
Horner syndrome
Posterior cerebral artery formed by bifurcation of ___
Provides major blood supply to ___
Main supply to ___ and ___
Basilar A
Midbrain
Occipital lobe
Visual cortex
Anterior cerebral artery occlusions affect paracentral lobule causing ___ somatosensory loss
Infarction affecting ____ leads to dyspraxia )inability to perform regular tasks) and tactile agnosia
CONTRALATERAL
Corpus callosum
Middle cerebral artery lesions; eyes will deviate to which side
Side of lesion
Meningeal arteries arise from:
External carotid artery
Branches of meningeal arteries
Anterior
Middle
Posterior
Middle meningeal artery enters via :
Foramen spinosum
Superficial cerebral veins drawn into superior sagittal sinus via ___
AKA ___
Bridging veins
Emissary veins
Great vein of ___ receives blood from internal cerebral veins and drains into ___sinus
Galen
Straight sinus
Straight sinus drains into (RIGHT/ LEFT) transverse sinus
Left
Super sagittal sinus drains into (RIGHT/ LEFT) transverse sinus
Right
___ sinus passes into jugular foramen
Sigmoid
Which nerve lies WITHIN the cavernous sinus near the internal carotid artery?
CN VI
Abducens
Subdural hematoma typically results from rupture of ___ veins
Superior cerebral veins
Epidural hematoma results from rupture of ___ artery
Middle meningeal artery
Optic nerve (CN II) is a pure ___ nerve
Sensory
Oculomotor Nerve (CN III) is a pure ___ nerve
Arises from ?
Passes through ___ fissure
Motor
Central midbrain
Superior orbital fissure
Trochlear nerve (CN IV) emerges from dorsal ___ and passes through ___ fissures. Innervates the superior ___ muscle
Midbrain
Superior orbital fissure
Superior oblique muscle
3 divisions of Trigeminal nerve (CN V)
Ophthalmic V1
Maxillary V2
Mandibular V3
ABducens (CN VI) ___ the lateral rectus of the eye
ABducts
Facial Nerve (CN VII) is a \_\_\_ nerve. Motor, sensory, and parasympathetic function but does NOT innervate \_\_\_\_ gland
Mixed nerve
Parotid
Motor functions of CN VII (facial) include :
Facial expression
Sensory function of CN VII (facial) is taste from ____ of the tongue
Anterior 2/3
Parasympathetic innervation of CN VII (facial) are what 3 glands?
NOT ___ gland
Lacrimal
Sublingual
Submandibular
NOT parotid
Glossopharyngeal nerve (CN IX) conduct taste of the posterior __ and which reflex?
Posterior 1/3
Gag reflex
Glossopharyngeal nerve provides motor fibers for __ salivary gland.
Parotid
Vagus (CN X) motor fibers are ___ in nature to the heart, lungs, and visceral organs
Parasympathetic
Sensory function of vagus Nerve (CN X) is___
Taste
Accessory nerve (CN XI) exits through \_\_\_ foramen Innervates \_\_ and \_\_ which move the head and neck
Jugular foramen
Trapezius
Sternocleidomastoid
Olfactory N (CN I) is the only cranial nerve that projects directly to \_\_\_ Only sensory system that has no precortical relay in the \_\_\_
Forebrain
Thalamus
