Exam 3 - high yield Flashcards
Astroglia? What does it make?
Connective tissue of CNS. Wraps around vessels and CNS. Makes BBB.
Oligodendroglia? In what disease?
Myelinates multiple neurons/axons. In MS.
Ependymal cells? What make?
Line ventricles. Secrete and absorb CSF.
Microglia? What job?
Signaling. Removes debris.
MS due to lack of which glia?
Oligodendroglia
Where Schwann Cells found? What do and what similar to?
In PNS. Myelinate 1:1. Similar to Oligodendroglia.
Define Gyri. Separated by?
Ridges/folds in cortex. Separated by Sulci.
Define Sulci
Groove between ridges. Folds of the cortex.
What to Gyri and Sulci increase?
Surface area
Define Fissure
Deep and large Sulci
White matter? Job?
Myelinated nerve fibers. Communicate between CNS regions.
Fasciculus? Connects what?
Bundles/tracts of fibers (white matter). Connect sensory input to motor output.
Commisures connect what?
Transverse connections between right and left hemispheres
Projection Fibers connect what to what?
Connect spinal cord to brain
Association Fibers connect what to what?
CNS to regions of cortex
Gray Matter? Arrangement?
Contain cell bodies and neurons. Arranged in columns.
Primary area job?
“Raw” individual sensory input or motor output
Secondary area job?
Gives meaning to primary sensory area
Association Area job? What provide?
Integrates sensory, memory input with prefrontal/motor areas to provide meaningful perceptual experiences
Six lobes of brain?
Frontal, Parietal, Occipital, Temporal, Insular, Limbic
MCA supplies which lobes?
Frontal, Temporal, Parietal
Parietal lobe mainly involved what? Which artery?
Somatosensory. MCA.
Three main areas of Parietal Lobe? (BA numbers and names)
3,1,2=Somatosensory
5,7=Somatosensory Association (what in hand dominant, who in room non-dom)
39,40=Somatosensory Association for language and math (posterior Wernicke dom, musical speech non-dom)
Temporal Lobe mainly involved in what? Artery?
Auditory processing. MCA.
Three main areas of Temporal Lobe? (BA numbers and names)
41=Primary Auditory Area
42=Auditory Association Area
22=Wernicke’s (dominant); understand musical speech (non-dom)
Occipital Lobe mainly involved in what? Artery?
Visual processing. PCA.
Frontal Lobe mainly involved in what? Artery?
Motor function. MCA.
Six main areas of Frontal Lobe? (BA numbers and names)
4=Primary Motor 6=Premotor 8=Frontal eye fields 10-12=Classic prefrontal area 9,46,47=Classic Motor Association 44,45=Brocha (dom), musical speech (non-dom)
Dominant Left Hemisphere involved in?
Usability, analytics, language. Aphasia
Non-dominant/right hemisphere involved in?
Creativity, design, 3D, art, music, intuition
Two main areas of Occipital Lobe? (BA numbers and names)
17=Primary Visual Area
18,19=Visual Association Area
Area 4 job? Lesion causes? Lobe?
Frontal lobe.
Primary Motor Area=contralateral voluntary movement
Lesion=contralateral hemiparesis (spastic) or hemiplegia (total loss)
Contralateral hemiparesis (spastic) or hemiplegia (total loss) is associated with which area? Artery and lobe?
Area 4. MCA, Frontal lobe.
Area 6 job? Lesion causes? Lobe?
Frontal lobe.
Premotor area, prepares and plans instructions.
Lesion=Inability to plan, sequence, perform purposeful movement.
Contralateral Apraxia=unable to do learned voluntary movement
Define Contralateral Apraxia. Which areas, lobe, artery?
Unable to do learned voluntary movement.
Area 6 Premotor and Area 9,46,47 Classic Motor Association.
Frontal lobe, MCA.
Area 8 job? Lesion causes? Lobe?
Frontal lobe.
Frontal eye fields. Conuugate/lateral gaze to opposite side to avoid double vision.
Destructive Lesion=eyes deviate toward lesion
Irritative Lesion=eyes deviate away from lesion
Destructive Lesion and Irritative Lesion cause what? Area, lobe, artery?
Destructive Lesion=eyes deviate toward lesion
Irritative Lesion=eyes deviate away from lesion
Area 8, frontal lobe, MCA
Dominant 44,45 function and lesion? Lobe?
Frontal lobe.
Brocha’s Speech Area for motor production of writing, speech, and signing.
Lesion: Aphasia=can understand, can’t speak
Dysarthria=Difficult articulating words with tongue and mouth
Dysphagia=Difficult to swallow