Summary
Samenvatting Voedingsleer
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Deze samenvatting is superhandig bij het leren voor het tentamen voedingsleer.
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VOEDINGSLEER,Inhoud
Les 1: Spijsvertering...............................................................................................................................3
Les 2: Koolhydraten...............................................................................................................................5
Les 3: Eiwitten........................................................................................................................................9
Les 4: Vetten........................................................................................................................................12
Belangrijke begrippen:.....................................................................................................................18
Vragen:............................................................................................................................................19
Les 5: Vitamines...................................................................................................................................20
Wateroplosbare vitamines..............................................................................................................22
Vet oplosbare vitamines..................................................................................................................24
Spoorelementen..............................................................................................................................27
Samenvatting vertering.......................................................................................................................30
, Les 1: Spijsvertering
Wat is de volgorde van spijsvertering?
1. Mond
2. Slokdarm
3. Maag
4. Twaalfvingerig darm
5. Dunne darm (jejenum – ileum)
6. Dikke darm
7. Endeldarm + anus
Wat zijn de functies van de spijsvertering kanaal?
1. Mond: verkleinen en start afbraak zetmeel
2. Slokdarm: Transport
3. Maag: tijdelijke opslag, maagsap, kneden voedsel, intrinsieke factor, geleidelijke afgifte
4. Twaalfvingerige darm: vertering (pancreassap, gal)
5. Dunne darm (jejenum- ileum) : vertering van eiwitten, koolhydraten en opname voedingstoffen
6. Dikke darm: waterresorptie
7. Endeldarm: tijdelijke opslag
Wat zijn de enzymen in de spijsverteringskanaal?
1. Mond: speeksel met a- amylase breekt zetmeel (koolhydraten) af. Deze activiteit stopt in de maag.
2. Slokdarm: niks
3. Maag: maagsap met hierin pepsine (eiwitsplitsing) en lipase (vetvertering) breken eiwitten en
vetten af.
4. Twaalfvingerige darm: Pancreas sap (alvleesklier) bevat amylase, lipase en protease. Gal (galblaas)
bevat galzuren, cholesterol, lecithine, en bilirubine. Gal wordt terug gewonnen in het ileum (tweede
deel dunne darm)
5. Dunne darm: bevat peptidasen voor vertering van eiwitten tot aminozuren. Ook bevat de dunne
darm disachariden voor de koolhydraatvertering.
6. Dikke darm: zorgt voor waterresorptie en is de plek waar voedingsvezels fermenteren.
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