Lab 11 Active transport in the rat gut

Question 1

absorption of the end products of digestion in the gut occurs in different mechanisms

Answer 1

simple diffusion, active transport, facilitated transport and movement of fluid along osmotic gradients

Question 2

reagents used in the rat gut

Answer 2

saline, glucose in saline solution, glucose combined with MgSO4

Question 3

GI tract is __ long

Answer 3

more than 28 feet long

Question 4

where extracellular digestion occur

Answer 4

stomach and small interstine

Question 5

responsible mainly for absorption of water

Answer 5

large intestine

Question 6

where does the end products of digestion are then absorbed

Answer 6

blood or lacteals through intestinal epithelium by different transport mechanisms

Question 7

an apical luminal side facing the lumen and a basolateral or serosal side facing the blood vessels

Answer 7

epithelial cells

Question 8

transporters differ on two sides

Answer 8

the substance is moved across the epithelial down or against the concentration and osmotic gradients

Question 9

SGLT sodium dependent glucose transporter located on the apical side

Answer 9

secondary active transport Na/K Atpase pump of glucose take place via

Question 10

where glucose is transported after SGLT

Answer 10

into the blood in the basolateral side by facilitated diffusion assisted by glucose transporter (GluT)

Question 11

the movement of water is dependent on the

Answer 11

osmotic gradient

Question 12

cause water absorption into the intestine

Answer 12

hypo-osmotic gradient

Question 13

observed in the intestinal lumen (the opposite of hypo)

Answer 13

hyper-osmotic

Question 14

Ion movements occur via

Answer 14

ion channels, Na/K/Cl co transporters

Question 15

tight ligature
loose ligature
cannula
segment a segment b

Answer 15

na