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samenvatting zintuigstelsel

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dit is een samenvatting van het zintuigstelsel

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June 4, 2023
Number of pages
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Written in
2022/2023
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1 De zintuigen




Inhoudsopgave
Inleiding..................................................................................................................................................2
Gevoelszintuigen....................................................................................................................................2
Tastzintuigen......................................................................................................................................2
Spierzintuig.........................................................................................................................................3
Koude- en warmtezintuig...................................................................................................................3
Pijnzintuig...........................................................................................................................................3
Chemische zintuigen...............................................................................................................................3
Reukzintuigen.....................................................................................................................................3
Smaakzintuig......................................................................................................................................4
Gehoorzintuig.........................................................................................................................................4
Uitwendige oor...................................................................................................................................4
Middenoor..........................................................................................................................................4
Inwendige oor.....................................................................................................................................5
Evenwichtszintuig...................................................................................................................................7
Voorhof...........................................................................................................................................7
De drie halfcirkelvormige kanalen..................................................................................................7
Proprioceptie..........................................................................................................................................7
Gezichtszintuig.......................................................................................................................................8
Oogbol................................................................................................................................................9
Buitenste oogrok: harde oogrok en hoornvlies..............................................................................9
Middelste oogrok: het vaatvlies, corpus ciliare en regenboogvlies................................................9
Buitenste oogrok: het netvlies........................................................................................................9
Inhoud van de oogbol.........................................................................................................................9
Hulporganen van het oog.................................................................................................................10
Woordenlijst.........................................................................................................................................10

, 2 De zintuigen



Inleiding
Zintuig Orgaan dat bestaat uit zintuigcellen
Zintuigcellen Zetten prikkels om in elektrische signalen of receptorpotentialen


Indeling zintuigen:

Gevoelszintuigen

- Tastzintuig  Voelen

- Spierzintuig  Bewegen en lichaamsbewustzijn

- Koude-en warmtezintuig  Warmte en koude voelen

- Pijnzintuig  Pijn voelen



Chemische zintuigen (chemosensoren)

- Reuk  De aanwezigheid van een bepaalde
stof ruiken

 Smaken/Proeven
- Smaak
 Concentratie van de bloedgassen
- Chemocensoren voor de meten
gasuitwisseling in de hersenstam, in
de aortaboog en in halsslagaders.



Gehoorzintuig  Horen

Evenwichtszintuig  Bewustzijn van stand van hoofd en
lichaam

Proprioceptie  Positie van het lichaam in de ruimte

Gezichtszintuig  Zien



Om waarneming te kunnen registreren en door te geven moeten enkele voorwaarden voldaan zijn:

- Prikkel moet sterk genoeg zijn
- Onze aandacht moet op de prikkel gericht zijn
- Prikkel moet binnen de prikkelgevoeligheid liggen
- De prikkel moet te onderscheiden zijn



Gevoelszintuigen
Tastzintuigen
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