Nutrient Absorption

Question 1

Nutrient absorption in stomach

Answer 1

Intrinsic factor (Vitamin B12 absorption)
Water, Alcohol

Question 2

Nutrient absorption in duodenum

Answer 2

Iron, calcium, mag, phos, copper, selenium, fat soluble vitamins

Question 3

Nutrient absorption in jejunum

Answer 3

Most macronutrients
Calcium, mag, phos, zinc
B vitamins, Vitamin C
Fat soluble vitamins

Question 4

Nutrient absorption in ileum

Answer 4

Vitamin B12
Bile salts

Question 5

Nutrient absorption in colon

Answer 5

Sodium, Potassium, Water
Short Chain FA

Question 6

Gastrectomy

Answer 6

B12 (lack of intrinsic factor), iron, calcium, vitamin D

Question 7

Ileocecal valve

Answer 7

B12, bile salts (fat malabsorption → ADEK deficiencies)

Question 8

Whipple

Answer 8

B12, iron, calcium, and fat-soluble vitamins

Question 9

Colectomy

Answer 9

Water and electrolyte imbalances (Na, K), short-chain fatty acids

Question 10

Gallbladder / bile duct or pancreas surgery

Answer 10

Gastroparesis, hyperglycemia, fluid / electrolyte imbalances, fat malabsorption, fat-sol vitamins, mg, ca, zinc, iron