Digestion and Absorption in the Stomach

Proteins are only partially digested in the stomach by the action of pepsin, while carbohydrates and fats are not digested at all by pepsin. (Digestion of starch begins in the mouth with the action of salivary amylase and continues for a time when the food enters the stomach, but amylase soon becomes inactivated by the strong acidity of gastric juice.) The complete digestion of food molecules occurs later, when chyme enters the small intestine.

Therefore, people who have had partial gastric resections—and even those who have had complete gastrectomies—can still adequately digest and absorb their food.

Almost all of the products of digestion are absorbed through the wall of the small intestine; the only commonly ingested substances that can be absorbed across the stomach wall are alcohol and aspirin. Absorption occurs as a result of the lipid solubility of these molecules. The passage of aspirin through the gastric mucosa has been shown to cause bleeding, which may be significant if aspirin is taken in large doses.

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Essentials of Human Physiology

Essentials of Human Physiology

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  • Susanne
    Is aspirin able to be absorbed across the stomach wall?
    8 years ago
  • sandra
    What commonly ingested substances are absorbed through the stomach wall?
    8 years ago
  • Marina
    What commonly ingested substance are absorbed through the stomach wall?
    8 years ago
  • susanna pisani
    What commonly ingested substsnces are absorbed tgrough yhe dtomach wsll?
    8 years ago
  • miika
    What substances are ingested but not digested?
    7 years ago
  • tuija
    What are the only molecules absorbed through the stomach?
    7 years ago
  • roderic
    What absorption occurs in the stomach in physiology?
    7 years ago
  • kai
    Why is alcohol absorbed in the stomach walls?
    4 years ago
  • CHRISTINE
    What substance is absorved in the stomack?
    3 years ago
  • chiaffredo
    Why stomach absorbs alcohol,aspirin?
    3 years ago
  • Quarantino Siciliani
    WHICH SUBSTANCE IS ABSOBED IN THE STOMACK?
    3 years ago
  • SOPHIE
    What is substance that absorb in stomach?
    2 years ago
  • mathilda
    Can proteins be absorbed through the stomach wall?
    2 years ago
  • andreas
    Does flexerol get absorbed in the stomach?
    2 years ago
  • mateusz johnston
    What kind of substances are absorbed by gastric mucossa?
    2 years ago
  • Frank
    Which food substance is absorbed in the stomach.?
    2 years ago
  • elizabeth
    How rotariq absorb in stomach?
    2 years ago
  • belba
    Which molecule is not able to be absorbed across the stomach wall?
    1 year ago
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    Can stomach wall absorb aspirin?
    1 year ago
  • cornelia
    What substanecs are absrobed by stomach?
    1 year ago
  • orazio
    Does absorption start in the stomach?
    1 year ago
  • bisirat fesahaye
    Is amylase and alcohol absorbed by stomache?
    1 year ago
  • Bingo
    How does aspirin cross the stomach wall?
    1 year ago
  • kaiju
    How is digestion in the stomach dual innervation?
    1 year ago
  • aliisa
    What is the effect of some alcohol being absorbed in the stomach?
    1 year ago
  • antonino
    Which substances can the stomach absorb?
    1 year ago
  • Jai
    Where does the absorption of aspirin occur?
    1 year ago
  • cassio
    What materials are absorbed in the stomach lining?
    12 months ago
  • steffen
    What molecules get across the gut wall?
    11 months ago
  • KATJA
    Is anyhting absorbed across the human stomach lining?
    11 months ago
  • Helen
    What substances does the stomach digest?
    11 months ago
  • joey
    Why does aspirin absorption occur in the stomach?
    10 months ago
  • ANKE
    Is water absorbed through the stomach wall?
    10 months ago
  • azzurra
    What substances are absorbed thru the stomach lining?
    10 months ago
  • ponto
    Which substances can be absorbed in the small intestine?
    9 months ago
  • milo roper
    Is aspirin digested in stomach or intestine?
    9 months ago
  • Morven Watson
    Where are things absorbed in th gut?
    8 months ago
  • Saare
    What role does absorption have on the stomach?
    8 months ago
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    What 4 things can your stomach absorb?
    8 months ago
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    Is there anything you can take that will help with absorption of medicine in your stomach?
    7 months ago
  • Ilmari
    Where does the absorption of nutrients in the stomach occurs?
    7 months ago
  • teuvo
    What things absorbed in stomach?
    7 months ago
  • Rhiannon
    Can the human stomach absorb hydraproxide?
    7 months ago
  • johanna
    What contributes to stomach absorption of molecules?
    6 months ago
  • Kelsey
    Does juice get absorbed by stomach?
    6 months ago
  • impi
    Why is the stomach nutrient absorption?
    6 months ago
  • carlos
    Why is the stomach for storage ,absorption and digestion?
    6 months ago
  • ralf
    How is alchol absorbed through the stomach wall?
    6 months ago
  • JONI JALONEN
    Which molecules are favored in absorption in stomach?
    6 months ago
  • aiden mackenzie
    What does the mucosa of the stomach absorb?
    6 months ago
  • gloriana
    How is aspirin ingested if it cant be in the stomach?
    5 months ago
  • kauko rajam
    Why can alchohol cross the mucosa of the stomach?
    5 months ago
  • kerttu
    Can sodium be absrobed in the stomach?
    5 months ago
  • isaias
    Can zinc absorb through your stomach walls as easily as your big intestine can?
    5 months ago
  • Laura
    What gets absorbed directly by the stomach?
    5 months ago
  • Laura Laaksonen
    What does the stomach absorb in digestion?
    4 months ago
  • luwam
    What kind of absorption happens in the stomach?
    4 months ago
  • Sara Kiros
    What is the significant absorption in the stomach?
    4 months ago
  • Dora
    How much absorbtion of vitamins takes place in stomache?
    3 months ago
  • alfonsina
    Does absorption happen in the stomach?
    3 months ago
  • emidio
    Why does the stomach only absord aspirin and alcohol?
    2 months ago
  • Haddas
    Why can some food molecules be absorbed across the intestinal wall and others cannot?
    2 months ago
  • abelino sal
    What substances are readily absorbed through the lining of the stomach Why?
    2 months ago
  • olindo
    Can solid ball lead be absorbed in the stomach?
    2 months ago
  • abby
    Can medicine be absorbed through the walls of the stomach?
    2 months ago
  • fallon
    What can the stomache directly absorb?
    26 days ago
  • myley
    Can you absorb oxygen through your stomach?
    26 days ago
  • Zula
    Does absorption of water in the blood happen in the stomach?
    15 days ago
  • karys
    Can some vitamins be absorbed by the gastric mucosa ?
    15 days ago
  • cynthia
    Does any food absorption occur in the stomach?
    9 days ago
  • gorhendad
    Does aspirin absorb faster in the stomach or small intestine?
    15 hours ago
  • sofia bergamaschi
    Why is there very little nutrient absorption occurs in the stomach?
    12 hours ago

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