Lec 5-7 - Absorption of Electrolytes/Water

Question 1

things of intestine that increase surface area

Answer 1

circular folds (folds of kerkring), villi, microvilli

Question 2

filaments inside microvillus

Answer 2

actin

Question 3

intestinal epithelial cells are blank due to presence of tight junctions

Answer 3

polarized

Question 4

blank have very tight junctions so no paracellular transport but blank have leaky junctions so paracellular transport exists

Answer 4

colon, small intestine

Question 5

paracellular transport is blank

Answer 5

passive

Question 6

most sodium and water in lumen comes from blank

Answer 6

gi secretions

Question 7

most sodium is blank by blank

Answer 7

reabsorbed, kidneys

Question 8

sodium coupled blank and blank absorption occur in the duodenum and jejenum of the small intestine

Answer 8

glucose, amino acid

Question 9

transport of glucose and aa is known as blank transport

Answer 9

secondary active

Question 10

blank allows the absorption of glucose and amino acids

Answer 10

sodium

Question 11

chloride absorption occurs here

Answer 11

jejenum, ileum

Question 12

chloride absorption can be blank or by blank

Answer 12

passive, parallel Na-H and Cl-HCO3 exchangers

Question 13

chloride absorption and HCO3 secretion occurs here

Answer 13

distal ileum, colon

Question 14

potassium is absorbed blank to water absorption

Answer 14

secondary

Question 15

removing water from the lumen causes blank in potassium concentration

Answer 15

increase

Question 16

high osmolarity means blank water concentration

Answer 16

low

Question 17

low osmolarity means blank water concentration

Answer 17

high

Question 18

water absorption is coupled to blank or can be blank

Answer 18

sodium absorption, passive