Arteries Flashcards
Anterior Cerebral Artery
Supply & Source?
supplies medial frontal lobe and medial parietal lobe
source is the internal carotid
Anterior communicating artery
source and supplies
source is anterior cerebral arteries
just connects the anterior cerebral arteries
Middle cerebral artery source and supply?
source: internal carotid
supply: lateral cerebral cortex and anterior temporal lobes
posterior cerebral artery
supply and source?
supply: medial occipital and medial temporal lobe
source: basilar artery
Vertebral artery
source and supply
source: subclavian artery
supplies: brainstem, cerebellum and posterior brain
basilar artery
source and supply?
source: vertebral artery
supplies circle of willis
caudate nucleus
receives input from…?
output …??
function
receives input from the cerebral cortex
output is the globus pallidus
function: planning and organizing specific motor program/output
Globus Pallidus
output?
Input?
function?
function: regulation of voluntary movement
receives input from striatum
output: the thalamus
Putamen
input?
output?
function?
receives info from cerebral cortex
output is the globus pallidus
function: motor preparation & motor execution
Substantia nigra
output/lesion
output: to thalamus
lesion: parkinson’s disease
Subthalamic nucleus
input?
globus pallidus
Cerebral peduncle
- tracts its involved in? function?
corticospinal tract
function: carry motor signals to lower motor neurons to control skeletal muscles
Medulla
What decussates?
medial leminscal tract in caudal medulla, corticospinal tract at pyramid decussation?
Anterior lobe of the cerebellum
function
lesions?
coordination of movement across multiple joints, error correction
lesion: deficits in motor coordination in the lower limb and trunk
posterior lobe of cerebellum function and lesion?
function: fine motor coordination, motor planning, hand-eye coordination
lesion: loss of coordinated movements of ipsilateral limb, dysmetria, intention tremor, dysdiadochokinesia
primary fissure
separates anterior and posterior lobe of cerebellum
Flocculus function
eye movements, vestibulocular reflex, balance
calcarine sulcus
separates the lingual gyrus and cuneate gyrus
central sulcus
separates the precentral gyrus and postcentral gyrus
precentral gyrus contains what info
primary motor cortex
postcentral gyrus contains what info
somatosensory cortex
corpus callosum - components?
genu, body, splenium
hippocampus involved in?
limbic system, declarative memory, short term to long term memory, spatial memory for navigation
Internal capsule function
The internal capsule describes a region deep in the brain that functions as a communication pathway. The internal capsule allows communication between areas of the cerebral cortex and areas of the brainstem
corona radiata contains which tracts
contains ascending and descending tracts that connect to the crebral cortex
corticospinal and corticobulbar
lateral fissure
divides the frrontal and parietal lobes from the temporal lobe
lingual gyrus location and lesion
located below calcarine fissure
lingual gyrus
lesion
loss of contralateral upper visual field in both eyes
precentral gyrus tracts
descending coticospinal; corticobulbar
post central gyrus tracts/info?
primary somatosensory cortex
ascending medial lemniscus and spinothalamic
mammillary bodies
memory info, part of limbic system
thalamus
relay for sensor information to the cerebral cortex
cerebral aqueduct connects
third and fourth ventricle
optic tracts connects what two structures?
optic chiasm to the lateral geniculate nucleus
amygdala
emotional memory formation
