Page 272 - Color_Atlas_of_Physiology_5th_Ed._-_A._Despopoulos_2003

A. Carbohydrate digestion and absorption of monosaccharides
Ptyalin
1 (α-amylase) Starch Pancreas
Salivary
α-amylases glands
Carbo- Glucose
hydrates
Maltose, etc. Digestion of Carbohydrates and Protein
Lactose Microvilli 2

Maltase Uniport
Isomaltase carrier
Pancreatic
α-amylase Na +
Pancreas symport
Maltase, Glucose
etc. Lactase
Galactose Plate 10.17
Saccharose
Saccharase Fructose
Intestinal lumen Mucosal cell Portal blood
B. Protein digestion and absorption of amino acids and oligopeptides
1 Protein Proteins HCl Pepsinogens
2
Pepsins
HCl –
HCO 3
Carboxypeptidases
Polypeptides
Pepsins
Trypsin, chymotrypsin,
elastase
Tri- and dipeptides Mucosal cell Portal
Pancreas blood
Hydrolysis AA
Amino acids (AS) ? dipeptidases ?
Amino- and
Kationic AA
–
HCO 3 Neutral AA
Amino- and
dipeptidases Proline, etc.
Carboxypeptidasen,
trypsin, chymotrypsin, β and γ AA
elastase H +
symport
Anionic AA
Na + Metabolism 259
symport
Despopoulos, Color Atlas of Physiology © 2003 Thieme
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