Neural Blood Vessels Flashcards
Mild Global Ischemia
Transient confusion, can get complete recovery
Severe Global Ischemia
diffuse necrosis of the brain, usually don’t survive
Moderate Global Ischemia
Infarcts in watershed areas
Cortical laminar necrosis
Pyramidal neurons; Layers 3, 5 &6
Supplies anteromedial surface of brain
Anterior Cerebral Artery
Supplies lateral surface of brain
Middle Cerebral Artery
Supplies posterior and inferior surfaces of the brain
Posterior Cerebral Artery
Primary regulation of cerebral perfusion
pCO2
To decrease ICP
hyperventilation
CL paralysis of upper limb and face
Lesion of MCA in the motor cx area
CL hemiparesis/hemiplegia
Lesion lenticulostriate artery of striatum, internal capsul
CL loss of sensation of lower limbs
Lesion of ACA of sensory cortex
CL loss of sensation of upper and lower limbs and face
Lesion of MCA sensory cortex
CL paralysis of lower limb
Lesion of ACA motor cortex
Infarct of paramedian branches of ASA and vertebral arteries
Medial Medullary syndrome
CL hemiparesis of upper and lower limbs
Lesion of ASA lateral corticospinal tract
Decreased CL proprioception
Lesion of ASA medial lemniscus
IL hypoglossal dysfx, tongue deviates IL
Lesion of ASA causal medulla (hypoglossal nerve)
Decreased pain and temperature from IL face and CL body; dysphagia, hoarseness, IL Horner Syndrome
Lateral medullary (Wallenberg) Syndrome PICA
Supplies the Lateral Medulla - vestibular nuclei, lateral spinothalamic tract, spinal trigeminal nucleus, nucleus ambiguus, sympathetic fibers, inferior cerebellar peduncle
PICA
Supplies Lateral pons - CN nuclei, cestibular nuclei, facial nucleus, spinal trigeminal nucleus, cochlear nuclei, sympathetic fibers
AICA
Supplies Middle and inferior cerebellar peduncles
AICA
Infarct of Middle and inferior cerebellar peduncles
AICA, causes ataxia and dysmetria
Paralysis of face, decreased lacrimation, salivation, decreased taste from anterior 2/3 of tongue, decreased corneal reflex. IL decreased hearing loss
AICA infarct of lateral pons