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Samenvatting Stofwisseling - Blok A - leerjaar 1

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samenvatting stofwisseling met plaatjes

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Samenvatting biologie:

Les 1: het spijsverteringsstelsel en de vertering van vetten en
koolhydraten
Leerdoelen:
 Latijnse termen kennen voor slokdarm, alvleesklier, twaalfvingerige
darm en dikke darm
Slokdarm: oesophagus
Alvleesklier: pancreas
Twaalfvingerige darm: duodenum
Dikke darm: colon
 De macroscopische opbouw van het spijsverteringsstelsel te kunnen
beschrijven
Waarom eten we?
 energie (calorieën) [opslag; warmte]
 biosynthese (koolstofskelet)
 essentiële voedingstoffen: aminozuren, vitamines, mineralen,
linolzuur
Wat is het nut van het verteren van voedsel?
 enzymatische hydrolyse van macromoleculen, zodat ze de
darmwand kunnen passeren
Waar blijft de (overtollige) energie?
 lever en spieren: glycogeen, vetweefsel
Wat gebeurt er als je te weinig eet?
 afbraak: eerst glycogeen, dan vetten en dan eiwitten

, Vertering in de mond:
1.Mechanische
vertering: kauwen
2. Enzymatische vertering
door amylase in speeksel:
afbraak van polysacchariden
(zetmeel,
glycogeen) >
amylase > Zetmeel/glycogeen kleinere polysaccharide + maltose
(disaccharide)
het spijsverteringstelsel en de koolhydraatvertering:




 De microscopische bouw van de maagwand te kunnen beschrijven
en de functie van de verschillende cellen en hun producten in de
enzymatische vertering in de maag te kunnen beschrijven

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Uploaded on
December 27, 2015
Number of pages
62
Written in
2014/2015
Type
SUMMARY

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