Blood Supply Flashcards
CNS utilizes how much of the CO
-% and mL
17%
850 mL
CNS burns approximately _____ mL O2
3.3
changes in blood circulation occur as…
CVAs; strokes
major arterial supply to the brain is derived from…
two internal carotids
vertebral-basilar system
where do the internal carotids and vertebral-basilar system anastomose?
around the base of the brain as the Anastomotic Circle of Willis
vessels involved in the Anastomotic Circle of Willis
anterior cerebral arteries anterior communicating artery internal carotid arteries posterior communicating arteries posterior cerebral arteries
arteries in the internal carotid system
anterior choroidal artery posterior communicating artery middle cerebral artery anterior cerebral artery striatal (ganglionic or central) arteries
anterior choroidal artery
-associated with…
choroid plexus
temporal lobe
posterior communicating artery
-_____ for _____
posterolateral ganglionic arteries for thalamus and basal ganglia
middle cerebral artery
-function
blood supply to the lateral surface of the cerebral hemispheres
anterior cerebral artery
-function
blood supply to the medial surface of the cerebral hemispheres, rostral to the parieto-occipital sulcus
striatal arteries
-function
penetrating arteries that supply the subcortical structures; basal ganglia, diencephalon, subcortical white matter
arteries of the vertebral-basilar system
vertebral artery anterior spinal artery posterior spinal artery posterior inferior cerebellar artery (PICA) basilar artery anterior inferior cerebellar artery (AICA) superior cerebellar artery posterior cerebral artery
vertebral artery
-function
anterolateral medulla
anterior spinal artery
-function
blood supply to anteromedial medulla and anterior spinal cord
posterior spinal artery
-function
blood supply to posterior and caudal medulla, posterior spinal cord
posterior inferior cerebellar artery (PICA)
-function
blood supply to cerebellum and lateral part of medulla
basilar artery
-function
supplies pons, cerebral peduncles
anterior inferior cerebellar artery (AICA)
-function
supplies pontine tegmentum and cerebellum
superior cerebellar artery
-function
dorsal midbrain, cerebellar cortex, and deep nuclei
posterior cerebral artery
-function
blood supply to midbrain, ventral and medial parts of the cerebral hemispheres
important veins
Great vein of Galen
cerebral veins
Dural veins
Great vein of Galen
- empties into…
- what does it drain
empties into straight sinus
drains subcortical structures
dural veins
-bridge from _____ to _____
cortex to dural sinuses
the caudal medulla receives vascularization from…
posterior spinal artery
anterior spinal artery
PICA
vertebral artery
in the caudal medulla, what does the posterior spinal artery supply
nucleus gracilis
fasciculus gracilis
nucleus cuneatus
fasciculus cuneatus
in the caudal medulla, what does the anterior spinal artery supply
internal arcuate fibers
olivary nucleus
pyramids
medial lemniscus
in the caudal medulla, what does the PICA supply
spinal nucleus of V
spinal tract of V
dorsal spinocerebellar tract
in the caudal medulla, what does the vertebral artery supply
ventral spinocerebellar tract
spinothalamic tract
the rostral medulla receives vascularization from…
posterior cerebral artery
anterior spinal artery
PICA
vertebral artery
in the rostral medulla, what does the posterior cerebral artery supply
dentate nucleus interposed nucleus -4E - emboliform -4G - globose fastigal nucleus
in the rostral medulla, what does the anterior spinal artery supply
MLF
pyramids
medial lemniscus
in the rostral medulla, what does the PICA supply
dorsal motor nucleus of X medial vestibular nucleus spinal vestibular nucleus dorsal cochlear nucleus ventral cochlear nucleus inferior cerebellar peduncle solitary tract solitary nucleus spinal nucleus of V spinal tract of V
in the rostral medulla, what does the vertebral artery supply
hypoglossal nucleus inferior olivary complex olivocerebellar fibers fascicles of hypoglossal nerve central tegmental tract spinothalamic tract
the caudal pons is vascularized by…
AICA
long circumferential branch of basilar artery
paramedian branch of basilar artery
short circumferential branch of basilar artery
in the caudal pons, what does the AICA supply
superior cerebellar peduncle
inferior cerebellar peduncle
middle cerebellar peduncle
in the caudal pons, what does the long circumferential branche of the basilar artery supply
facial colliculus MLF geniculum (genu) of facial nerve fibers abducens nucleus fascicles of facial nerve lateral vestibular nucleus spinal trigeminal nucleus spinal trigeminal tract facial motor nucleus superior olivary nucleus central tegmental tract spinothalamic tract medial lemniscus transverse pontine fibers
in the caudal pons, what does the paramedian branch of the basilar artery supply
fasciciles of abducens nerve
trapezoid body
corticospinal and corticobulbar tracts
in the caudal pons, what does the short circumferential branch of the basilar artery supply
pontine nuclei
the middle pons is vascularized by…
long circumferential branch of basilar artery
short circumferential branch of basilar artery
paramedian basilar artery
in the middle pons, what does the long circumferential branch of the basilar artery supply
superior vestibular nucleus mesencephalic tract and nucleus of the trigeminal nerve main sensory nucleus of trigeminal nerve trigeminal motor nucleus fascicles of trigeminal nerve MFL medial lemniscus spiral - lateral lemniscus central tegmental tract
in the middle pons, what does the short circumferential branch of the basilar artery supply
pontine nuclei
in the middle pons, what does the paraemdian basilar artery supply
trapezoid body
the inferior colliculus of the midbrain is vascularized by…
long circumflex posterior cerebral artery
short circumflex posterior cerebral artery
basilar bifurcation and posterior cerebral artery
in the inferior colliculus, what does the long circumflex posterior cerebral artery supply
inferior colliculus nucleus of inferior colliculus lateral lemniscus periaqueductal gray brachium of inferior colliculus
in the inferior colliculus, what does the short circumflex posterior cerebral artery supply
CTT
medial lemniscus
spiral lemniscus (thalamic tract)
in the inferior colliculus, what do the basilar bifurcation and posterior cerebral arteries supply
MLF trochlear nucleus decussation of superior cerebellar peduncles substantia nigra cerebral peduncle
the superior colliculus of the midbrain is vascularized by…
long circumflex branch of posterior cerebral artery
short circumflex branch of posterior cerebral artery
paramedial branch of basilar artery
in the superior colliculus, what does the long circumflex branch of the posterior cerebral artery supply
superior colliculus
commissure of SC
pulvinar
in the superior colliculus, what does the paramedian branch of the basilar artery supply
oculomotor complex MLF red nucleus substantia nigra dentatorubrothalamic tract cerebral peduncle central tegmental tract
in the superior colliculus, what does the short circumflex branch of the posterior cerebral artery supply
periaqueductal grey cerebral aqueduct brachium of inferior colliculus medial geniculate nucleus lateral geniculate nucleus optic tract medial lemniscus spiral lemniscus
