Brodmann's Areas Flashcards
(40 cards)
Areas 1,2,3: Function
- Pain
- Thermal
- Deep touch
- Light touch
- Vibratory
- Kinesthetic input
Areas 1,2,3: Location
- Post central gyrus of the parietal lobe
Areas 1,2,3: Affected aeas
- Area 4,5,6
- Lamina IV, V, VI developed
- Thalamic efferent from VPL and VPM
Areas 1,2,3: Special notes
- “Somesthetic cortex”
- Thick pallium
Area 4: Function
- Motor initiation of distal limbs, facial and oral muscles
Area 4: Location
- Precentral gyrus of frontal lobe
Area 4: Affected areas
- Areas 5,6
- Lamina V, VI developed
Area 4: Special notes
- Only area to contain Betz (large pyramidal) cells
- Contributes most to pyramidal system
Area 6: Function
- Influences proximal portion of extremities
Area 6: Location
- In front of area 4
Area 6: Special notes
- “Premotor region”
Area 8: Functions
- Initiates voluntary movements of the eye
- Stimulates LMN move 6 extraocular eye muscles
Area 8: Location
- In front of area 4
Area 8: Special notes
- “Premotor region”
Areas 9,10,11,12: Function
- Elaboration of thought
- Abstract reasoning
- Imaginative and emotional reasoning
Areas 9,10,11,12: Location
- Anterior and rostral part of frontal lobe
Areas 9,10,11,12: Affected areas
- Lamina II, III developed (assocative cortex)
Areas 9,10,11,12: Special notes
- “Prefrontal cortex”
Area 44: Function
- Motor speech center
Area 44: Location
- Frontal operculum
Area 44: Affected areas
- Area 4: Muscles for speech, writing, signing
- Receives association fibers via parietal and temportal
Area 44: Special notes
- Broca’s Speech Area
- Stroke = Motor aphasia
- Connected to 22 arcuate fasciculi
Areas 17,18,19: Functions
- Receives fibers from lateral geniculate body
- 18,19: Integrating , memory storage from visual sensation
Areas 17,18,19: Location
- Calcarine sulcus
