Summary
Samenvatting Basis Diervoeding - Het Spijsverteringsstelsel
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Dit is de samenvatting van het deel spijsverteringsstelsel.
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RomanieD
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HET SPIJSVERTERINGSSTELSELa) Algemene inleiding
Enzymatische vertering
vertering
Microbiële vertering door bacteriën
b) Algemene bouw van het spijsverteringsstelsel
Mondholte
Pharynx
Oesophagus = slokdarm
Maag of magenstelsel
Duodenum = 12-vingerige darm
Jejunum en ileum = nuchtere darm en kronkeldarm
Caecum = blinde darm
Colon = karteldarm
Rectum = endeldarm
Enzymproductie:
Speekselklieren
Lever met galblaas
Alvleesklier
Opbouw in lagen:
Tunica mucose
o Epithelium
o Lamina propria
o Lamina muscularis mucosa
Tunica submucosa
Tunica muscularis
o Lamina muscularis interna
o Lamina muscularis externa
Tunica serosa
, c) De verschillende onderdelen van een spijsverteringsstelsel
d) Mondholte
Functie:
o Voederopname
o Mechanische voorbereiding
o Smaakpapillen
Speekselklieren:
o Water
o Amylase zetmeelvertering
o Bicarbonaat buffer
e) Slokdarm
Transport: peristaltiek of omgekeerde peristaltiek
Zeer rekbaar
Spieren en slijmklieren
f) Maag of maagstelsel
HCl zuurbarrière
o Doden van bacteriën
o Denaturatie: afbreken van voedsel
o Pepsinogeen pepsine
g) Dunne darm
Duodenum, jejunum, ilium
Eigenlijke vertering enzymatische vertering
h) Dikke darm
Caecum, colon, rectum
Resorberen van vocht
Microbiële vertering
o Fermentatie ruwe celstof
o Onvolledige vertering eiwitten
o Vorming vitamines
i) Lever en gal
Galzouten
Emulgeren van vet
j) Pancreas
Trypsine, carboxypeptidase omzetten eiwitten naar kleine peptiden
Chymotrypsine
Aminopeptidase omzetten polypeptiden naar dipeptiden en aminozuren
Amylase omzetten zetmeel en glycogeen naar maltose
Lipase omzetten vetten naar vetzuren en glycerol
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