Brodmann's Areas Flashcards Preview

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Flashcards in Brodmann's Areas Deck (40):
1

Areas 1,2,3: Function

- Pain
-Thermal
- Deep touch
- Light touch
- Vibratory
- Kinesthetic input

2

Areas 1,2,3: Location

- Post central gyrus of the parietal lobe

3

Areas 1,2,3: Affected aeas

- Area 4,5,6
- Lamina IV, V, VI developed
- Thalamic efferent from VPL and VPM

4

Areas 1,2,3: Special notes

- "Somesthetic cortex"
- Thick pallium

5

Area 4: Function

- Motor initiation of distal limbs, facial and oral muscles

6

Area 4: Location

- Precentral gyrus of frontal lobe

7

Area 4: Affected areas

- Areas 5,6
- Lamina V, VI developed

8

Area 4: Special notes

- Only area to contain Betz (large pyramidal) cells
- Contributes most to pyramidal system

9

Area 6: Function

- Influences proximal portion of extremities

10

Area 6: Location

- In front of area 4

11

Area 6: Special notes

- "Premotor region"

12

Area 8: Functions

- Initiates voluntary movements of the eye
- Stimulates LMN move 6 extraocular eye muscles

13

Area 8: Location

- In front of area 4

14

Area 8: Special notes

- "Premotor region"

15

Areas 9,10,11,12: Function

- Elaboration of thought
- Abstract reasoning
- Imaginative and emotional reasoning

16

Areas 9,10,11,12: Location

- Anterior and rostral part of frontal lobe

17

Areas 9,10,11,12: Affected areas

- Lamina II, III developed (assocative cortex)

18

Areas 9,10,11,12: Special notes

- "Prefrontal cortex"

19

Area 44: Function

- Motor speech center

20

Area 44: Location

- Frontal operculum

21

Area 44: Affected areas

- Area 4: Muscles for speech, writing, signing
- Receives association fibers via parietal and temportal

22

Area 44: Special notes

- Broca's Speech Area
- Stroke = Motor aphasia
- Connected to 22 arcuate fasciculi

23

Areas 17,18,19: Functions

- Receives fibers from lateral geniculate body
- 18,19: Integrating , memory storage from visual sensation

24

Areas 17,18,19: Location

- Calcarine sulcus

25

Areas 17,18,19: Special notes

- Primary visual cortex
- "Striate cortex" relation to lamina IV
- Damage 18,19 = Prosopagnosia

26

Area 41: Functions

- Hear
- Integration of pitch
- Tone loudness

27

Area 41: Location

- Transverse temporal gyrus (Heschl's gyrus)

28

Area 41: Special notes

- Primary auditory cortex
- Input comes from Medial Geniculate Body

29

Area 22: Functions

- Hearing memory function
- Brings underlying structure of utterance together
- Formation of the written word

30

Area 22: Location

- Surrounds area 41
- Extends nearly into parietal lobe

31

Area 22: Associated area

- Info from parietal lobe (5,7,39,40)
- Info from occipital lobe (17,18,19)

32

Area 22: Special notes

- "Secondary Association Cortex"
- Damage = dysphasia
- Connected to 44 by arcuate fasciculi

33

Areas 5,7,39,40: Functions

- Synthesizing memory
- Sensation into creative function (reading, writing, and language)

34

Areas 5,7,39,40: Location

- Sandwiched between somesthetic, auditory, and visual reception region
- Fills bulk of parietal lobe

35

Areas 5,7,39,40: Special notes

- Damage to 39 (angular gyrus) = alexia and agraphia

36

Area 43: Function

- Taste reception region

37

Area 43: Location

- Parietal operculum

38

Areas 34,28: Function

- Olfactory area

39

Areas 34,28: Location

- 34: Uncus
- 28: Parahippocampal gyrus

40

Areas 34,28: Special notes

- 1st memories probably of smell
- Does NOT touch the thalamus