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College aantekeningen Tractus Digestivus

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Aantekeningen van Anatomie & Fysiologie hoorcollege Tractus Genitalis

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Hoorcollege 1.2 Anatomie & Fysiologie Tractus Digestivus


De voedselweg van voedsel in de vaste vorm: Mond, slokdarm (3 seconden), maag
(1-3 uur), dunne darm (2-6 uur), dikke darm (12-48 uur).


Gladula is de Latijnse benaming voor een klier.


 Glandula salivaria (speekselklieren)
 Glandula parotis (oorspeekselklier)
 Glandula submandibularis (onderkaakspeekselklier, onderkaaksklier) 6
 Glandula sublingualis (ondertongspeekselklier, ondertongsklier) 5




Mondholte (cavum oris)
 Zintuiglijke analyse van het voedsel
 Mechanische verwerking: Tanden, tong en gehemelte
 Bevochtiging van voedsel door slijm in speeksel
 Begin van vertering door enzymen in speeksel




Nasopharynx: De neus- keelholte, met name het gedeelte dat gelegen is achter het
zachte gehemelte.


Oropharynx: Deel van de keelholte, dat achterin de mondholte begint.


Laryngopharynx: Het strottenhoofd.


Trachea: De luchtpijp.


Oesophagus: De slokdarm.

, Keelholte / farynx en (ver)slikproces
Functies
1. Orale fase (buccale fase): Samendrukken bolus (geheel van door te slikken
voedsel of vloeistof) en entree keelholte.
2. Faryngeale fase: Optillen van het strottenhoofd, buigen van epiglottis
(strottenklepje), sluiten glottis (combinatie van de stembanden en de ruimte
ertussen).
3. Oesofageale fase: Peristaltiek duwt bolus (geheel van door te slikken voedsel
of vloeistof) naar de maag.
4. 4de stap: Bolus (geheel van door te slikken voedsel of vloeistof) komt maag
binnen.




Palatum molle: Zachte gehemelte
Palatum durum: Harde gehemelte




Oesophagus

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October 9, 2023
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Ingrid haest
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