Cerebral Hemispheres and Vascular Supply
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
|
|
||||
|---|---|---|---|---|---|
| Main functional areas of the Cerebral Cortex = ? | * Hand/Face are on the Lateral convexities.... * Legs are on the inter-hemispheric fissures
🗑
|
||||
| Where does Broca's area reside ? | * In the DOMINANT, usu LEFT hemisphere, lies in the inferior frontal gyrus... * Just anterior to the articulatory areas of the primary motor complexes
🗑
|
||||
| Where does Wernicke's area reside ? | * lies in the superior temporal gyrus, adjacent to the primary auditory cortex
🗑
|
||||
| Association Cortex = ? | * in the NONdominant (usu Right hemisphere, esp. in the parietal lobe).... * it is important fr attention to contralateral body and space
🗑
|
||||
| Visual Fields = ? | * Primary Visual cortex for the contralateral visual hemifield lies along the occipital lobe fissure.... * Optic Radiations = carry visual info from thalamus to visual cortex, pass under the parietal and temporal cortex
🗑
|
||||
| Terminal branches of the internal carotid arteries ? | * ACA (Ant. Cerebral Artery) and MCA (Middle Cerebral Artery)
🗑
|
||||
| Provides Cirulation to the Anterior and Posterior portions of the brain ? | * Anterior Circ. = by bilaterally paired internal carotid arteries..... * Post. Circ. = by bilateral vertebral arteries
🗑
|
||||
| Where these meet ? | * Where these ant. and post. circulations meet = CIRCLE of Willis
🗑
|
||||
| The Basilar Arteries are made by the convergence of the vertebral arteries. What then comes off of the Basilar Artery ? | * PCA (posterior Cerebral Artery)
🗑
|
||||
| Vascular territories for the ACA = ? | * travels between the interhemisphereic fissures as it sweeps back across the corpus callosum...* Gives off the pericallosal and callosomarginal arteries...* supplies most of the ant-medial surface, from frontal to ant. parietal lobes,
🗑
|
||||
| ACA continued... | * including the medial sensorimotor cortex
🗑
|
||||
| MCA = ? | * turns laterally to enter the depths of the sylvian fissure, where it bifurcates in to a superior and inferior division.
🗑
|
||||
| PCA = ? | * sends branches to the inferior and medial temporal lobes and over the medial occipital cortex
🗑
|
||||
| Superior Division of the MCA supplies = ? | * the cortex above the Sylvian Fissure, which includes the frontal lobe
🗑
|
||||
| Inferior Division of the MCA supplies = ? | * the cortex below the Sylvian Fissure, including the lateral temporal lobe and some of the parietal lobe
🗑
|
||||
| ACA in simple words ? | * supplies most of the frontal and parietal lobes medially and superiorly
🗑
|
||||
| MCA ? | * laterally, supplies some of the parieta and temporal lobes
🗑
|
||||
| PCA ? | * Supplies inferior/medial and inferior lateral temporal lobes.... * Also supplies most of the occipital lobes
🗑
|
||||
| Deficits in Right ACA = ? | * LEFT leg weakness and sensory loss..... * behavioral abnormalities due to frontal lobe affected.... * Can see left hemineglect or even left hemiplegia
🗑
|
||||
| Left ACA = ? | * Same as Right ACA, except everything is on the RIGHT side
🗑
|
||||
| Deficits in Right PCA = ? | * Left homonymous hemianopia, and can see left hemisensory and hemiparesis loss also
🗑
|
||||
| Left PCA = ? | * Right homonymous hemianopia, Alexia, can see Aphasia, and Right hemisensory and hemiparesis loss
🗑
|
||||
| MCA RIGHT SUPERIOR Division Deficit = ? | * LEFT arm/face weakness, Left hemineglect, and may see some left face/arm sensory loss
🗑
|
||||
| MCA LEFT Superior Division = ? | * RIGHT arm/face weakness, RIGHT hemineglect, and may see some RIGHT face/arm sensory loss.... * Also Broca's Aphasia
🗑
|
||||
| MCA RIGHT INFERIOR Division Deficit = ? | * Major Left Hemineglect, Left visual field deficit, have normal motor on the LEFT but just choose not to use LEFT side.... * often a RIGHT Gaze is present
🗑
|
||||
| MCA LEFT INFERIOR Division Deficit = ? | * Wernicke's Aphasia.... * Right visual side defect... * Right face'arm sensory loss.... * Right side weakness and motor findings are absent
🗑
|
||||
| MCA RIGHT STEM Deficit = ? | * Combo of Right DEEP MCA + left hemiplegia, hemianesthesai, homonymous hemianopia, and left hemineglect.... * usu a right gaze bc a deficit in the area that drives eyes to the left
🗑
|
||||
| MCA LEFT Stem Deficit = ? | * Combo of LEFT DEEP MCA + Right Hemiplegia, hemianesthesia, homonymous hemianopia, and GLOBAL Aphasia. ... * See a LEFT gaze preference
🗑
|
||||
| MCA RIGHT Deep Territory Deficit = ? | * Left Pure Motor hemiparesis... * if larger infarcts, can see left hemineglect as well
🗑
|
||||
| MCA LEFT Deep Territory Deficit = ? | * Right Pure Motor hemiparesis... * if larger infarcts, can see Aphasia as well
🗑
|
||||
| What are the significance of watershed zones ? | * don't need an infarct to cause issues, just need a drop in BP... * Are areas in between two arteries that are supplied by smaller branches... * Can have weakness, aphasia, etc. depending on what watershed areas are deficient
🗑
|
||||
| Venous drainage of the cerebral hemispheres = ? | * has both superficial and deep veins.... * Superficial Veins drain in to the Superior Sagittal Sinus and the Cavernous Sinus.... * Deep Veins Drain in to the Great Vein of Galen... * Both eventually drain in to the Int. Jugular Vein
🗑
|
||||
| Sagittal sinus thrombosis = ? | * usu due to a hypercoag. issues.... * high frequency in postpartum pregnant ppl, and causes an increase in intracranial pressure.. * See seizures, headaches, different lvls of consciousness
🗑
|
||||
| Simplified issues with ACA deficit = ? | * contralateral leg, more than arm/face weakness
🗑
|
||||
| PCA = ? | * contralateral homonymous hemianopia
🗑
|
||||
| MCA = ? | * visual gaze towards the side of the lesion
🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Created by:
thamrick800
Popular Medical sets