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Samenvatting cerebrum

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Samenvatting van het derde hoofdstuk anatomie en fysiologie van de inwendige organen en zenuwstelsel, schijf 1, semester 2: cerebrum.

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Cerebrum
= grote hersenen

1: Cerebrum, Cortex of grote hersenen

2 en 3: Diencephalon of tussenhersenen: Thalamus
(2) en Hypothalamus (3)

4: Hypofyse

5: Mesencephalon of middenhersenen of bovenste
deel van de hersenstam

6: Pons of deel van de hersenstam

7: Cerebellum

8: Medulla oblongata

9: Medulla spinalis




Grote hersenen = grootste deel van de hersenen, plaats voor

• Bewuste gedachten
• Verstandelijke functies uitvoeren
o Denken
o Geheugen
o Intelligentie
o Zelfbewustzijn
o Creativiteit

Bestaat uit grijze & witte stof

• Grijs:
o Oppervlakkig (vormen cortex cerebri (= hersenschors))
o Diepere basale kernen
• Wit:
o Centraal
o Onder hersenschors
o Omgeeft basale kernen




1

, 1. Uitwendige bouw




1.1 Hemisferen
Grote hersenen: 2 gespiegelde hemisferen (= hersenhelften)

• Linker hemisfeer
• Rechter hemisfeer
➔ Gescheiden door diepe spleet: fissura longitudinalis cerebri
➔ Overkoepelen samen de
o Tussenhersenstam (= thalamus & hypothalamus)
o Middenhersenen (= bovenste deel hersenstam)
o Kleine hersenen
➔ Tussen hemisferen: verbindingen (belangrijkste = corpus callosum = hersenbalk)

1.2 Stof
Grijze stof = cellichamen van neuronen

• Buitenkant
• Vormen cortex (= schors)
o Sterk geplooid → oppervlaktevergroting
▪ Sulci (= groeven)
▪ Gyri (= windingen)

Witte stof = verbindingsbanen dankzij gemyeliniseerde axonen

• Binnen cortex
• Wordt medulla genoemd (= merg)




2

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Uploaded on
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Number of pages
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Written in
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Type
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