Session 5- Absorption and Digestion Flashcards
what is glucose absorbed with
sodium
what does isomaltase do
breaks 1,6 bonds in starch
what are the products of the breakdown of starch
glucose
matose
alphadextrins
what does lactose get broken down into
galactose and glucose
what does sucrose get broken down into
glucose and fructose
What transporter do galactose and glucose travel through in the apical membrane into the cell
SGLT1 with sodium
What transporter do galactose and glucose travel through in the apical membrane into the cell
SGLT1 with sodium
What transporter does fructose travel through to get in the cell
GLUT5
What transporter do glucose, fructose and galactose travel through on the basal membrane to get into the blood
GLUT 2
how are proteins broken down in the stomach
chief cells produce pepsinogen in the gastric glands which is converted to pepsin in the stomach lumen
pepsin converts the proteins into oligopeptides and amino acids
what do endopeptidases do
break down proteins in the centre
what do exopeptidases do
break down peptides at the end to make amino acids and short peptides
symptoms of B12 deficiency
neurological problems
megaloblastic anaemia
causes of b12 deficiency
lack of intrinsic factor hyperchlorhydria -inadequate stomach acid not enough b12 in food inflammation of terminal ileum- b12 absorbed here
symptoms of IBS
abdominal pain bloating flatulence constipation diarrhoea rectal urgency
