bio - digestion (copy)

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Digestion mécanique

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26 Terms

1

Digestion mécanique

gros mole. nourriture briser → petit mole. =digerer

  • mastication/peristaltisme/contractions musc.

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2

Digestion chimique

enzyme dig. coupe liaison chim. (maintient les mole. nourriture) → petites pour rentrer sang

  • amylase

  • pepsine

  • suc pancreatique

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3

ordre de digestion

Bouche → œsophage → estomac → petit intestin → gros intestin → rectum/anus

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4

Maltase

maltose → glucose

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5

Lipase

triglyc.→> diaglycérol+acide gras

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6

Lactase

Lactose → glucose+galactose

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7

Sucrase

sucrose → fructose +glucose

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8

Pepsine/peptidase

digere proteines → peptides

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9

Amylase

dans glandes salivaires

  • amidon → maltose (digestion chim.)

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10

trypsine

protéines→peptide

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11

Bouche - dig. chim.

mucine , solution tampon, lyzosome

  • amylase salivaire

  • lipase linguale

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12

mucine

protection+lubrication d’aliments

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13

solution tampon

neutralise acidite = protection contre carie

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14

lysozyme

antibacterien

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15

bouche - dig. mec.

mastication - action mange nourritue avec dents (briser)

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16

oesophage - dig. mec

peristaltisme -

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17

estomac - dig. chim.

enzymes: pepsine + lipase

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18

estomac - dig. mec

bouleversments → contractions muscs dans estomac

  • forme de ‘8’

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19

petit intestin - dig. mec

peristaltisme

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20

petit intest. dig. chim

enzyme:

  • peptidase

  • maltase

  • sucrase

  • lipase

  • lactase

pancreas

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21

pancreas

enzyme: trypsine, lipase, amylase

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22

gros intestin - dig. mec.

peristaltisme

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23

gros intestin - dig. chim.

dechets (poop)

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24

intestin grele

grand partie de digestion+absorp nutri.

  • duodenum (25cm)

  • jejunum (2-3m)

  • ileon (2-3m)

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25

duodenum

ou il ya digestion → recoit secretions de 2 organes dig.

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26

jejunum+ileon

l’absorp de nutri+aliments tres elevee

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