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Summary

Samenvatting Schema Verteringsstelsel

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Samenvattend schema over het verteringsstelsel.

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Institution
Secondary school
Level
Course
School year
5

Document information

Uploaded on
April 19, 2021
Number of pages
3
Written in
2020/2021
Type
Summary

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Samenvatting Verteringsstelsel
Onderdelen Functie Verteren van…
Gebit Oppervlakte van voedsel vergroten
Mondholte
Speekselklieren Afgeven enzym amylase Zetmeel  maltose
Slijm als smeermiddel
Huig Neusholte afsluiten bij slikken
Keelholte
Strotklepje Luchtpijp afsluiten bij slikken
Verplaatsen voedsel van keelholte naar maag met
Slokdarm peristaltische bewegingen

Tijdelijke opslag van voedsel

Maag Maagsapklieren Produceren maagsap (water, zoutzuur, enzym pepsinogeen) Eiwitten  aminozuurketens
Pepsinogeen = inactieve vorm van enzym peptase

Zoutzuur (pH 1,5 – 3,5)  bacteriën in voedsel doden

Slijmwand Beschermt maagwand tegen zure maagsap en peptase

Maagportier Kringspier die maag afsluit
Afgifteplaats van:
Gal en alvleessap vermengen met voedselbrij

12-vingerige Lever Produceert gal
darm Breekt rode bloedcellen aftot bilirubine
Afbraak giftige stoffen (bijv. alcohol)
Tijdelijke opslag van glucose als glycogeen

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