MSP - digestion and absorption

0.0(0)
studied byStudied by 0 people
learnLearn
examPractice Test
spaced repetitionSpaced Repetition
heart puzzleMatch
flashcardsFlashcards
Card Sorting

1/5

encourage image

There's no tags or description

Looks like no tags are added yet.

Study Analytics
Name
Mastery
Learn
Test
Matching
Spaced

No study sessions yet.

6 Terms

1
New cards

explain the process of how carbohydrates are digested

  1. mouth - salivary amylase - hydrolyses glycosidic bonds in starch to maltose

  2. stomach - conditions are acidic and dentures amylase

  3. small intestine (duodenum) - the remaining starch mixes with the secretion from he pancreas calves pancreatic juice (contains pancreatic amylase and alkaline salts). pancreatic amylase continues the hydrolysis of any remaining starch to maltose. alkaline salts maintain the pH at around neutral so that the amylase can function.

  4. small intestine (ileum) - epithelial cells containing membrane bound enzymes. the maltese hydrolyses the maltose into glucose, which is small enough to cross the ileum wall into the blood

2
New cards

explain the process of lipid digestion

Pepsin

  • hydrolyses the peptide bond between amino acids in the stomach

  • work in low pH

  • form short polypeptide chain

Trypsin

  • hydrolyse the peptide bonds between amino acids in the duodenum

  • produced by the pancreas

  • forms short polypeptide chains and dipeptides

Dipeptides

  • hydrolyses the peptide bond between the two amino acids of a dipeptide

  • they are membrane bound being part of the cell surface membrane of the epithelial cels lining the item

3
New cards

where does pepsin work in the process of protein digestion?

  • in the middle of the polypeptide chain (endo/in)

4
New cards

where does trypsin work in the process of protein digestion?

  • works at the end of the polypeptide chain (exo)

5
New cards

where does dipeptides work in the process of protein digestion?

  • works between two amino acids

6
New cards

explain the process of lipid digestion

  1. most lipid/triglyceride digestion occurs in the small intestine (duodenum)

  2. lipid/triglycerides form a suspension of large droplets

  3. lipid/triglycerides are split up into smaller droplets by bile salts

  4. this process is called emulsification and increases the surface area for lipase action

  5. so faster hydrolysis of lipid/triglycerides

  6. lipases are produced in the pancreas and they hydrolyse the ester bonds found in triglycerides to form fatty acids and glycerol/monoglycerides

  7. the fatty acids and glycerol/monoglycerides are carried to the epithelial cells lining the small intestine (ileum) in the form of micelles