brain - novak Flashcards
blood supply to the brain
cerebral arterial circle (circle of willis), internal carotid, vertebral artery
vertebral artery pathway
Starts as a branch off the subclavian and travels through the transverse foramina of C1-C6. It then goes through the foramen magnum where the right and left branch combine to form the basilar artery which then joins the cerebral arterial circle
internal carotid artery pathway
Starts as a branch from the common carotid then enters the carotid canal. It gives off many branches like the Opthalamic art, Post communicating art, Middle cerebral art, and Ant cerebral art (OPMA)
5 components of the circle of willis/cerebral arterial circle
anterior cerebral art ant communicating art internal carotid art posterior cerebral art post communicating art
most common site for stroke
middle cerebral artery
2 layers of dura mater
periosteal and meningeal
falx cerebri
dural septa separating cerebral hemispheres
tentorium cerebelli
dural septa separating cerebellum and cerebrum
falx cerebelli
dural septa separating cerebellar hemispheres
diaphragma sellae
dural septa covering the sella turcica; infundibulum travels through it
8 dural venous sinuses and be able to describe where they are
superior saggital, inferior saggital, straight (between cerebrum and cerebellum-ish), confluence of sinuses (internal occipital protuberance), transverse, sigmoid, superior petrosal, inferior petrosal
what is in the cavernous sinus
ICA, CN III, IV, V1, V2, VI
blood supply of the caverous sinus
surrounds sella turcica receives blood from the superior and inferior opthalmic veins and drains into the superior and inferior petrosal sinuses
4 sulci of cerebrum
lateral, central, parietoccipital, longitudinal
5 lobes of cerebrum
frontal, parietal (sensory to pain, temp, touch, pressure, spatial orientation language), temporal (autitory perceptions, learning, memory, olfaction), occipital, insula
which lobe is the primary motor cortex in
frontal
which lobe is the primary somatosensory cortex in
parietal
brocas area
speech center in frontal lobe
wernickes area
general interpretive area on left hemisphere
what cranial nerves attach in the midbrain
III, IV
what cranial nerves attach in the pons
V
what cranial nerves attach at the junction of pons and medulla
VI, VII, VIII
what cranial nerves attach in the medulla
IX, X, XI, XII
