Summary
samenvatting zintuigstelsel
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dit is een samenvatting van het zintuigstelsel
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1 De zintuigenInhoudsopgave
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
Lichaampje van Pacini - Zeer gevoelig voor druk
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