A droplet of bile must pass through __named extraheptic channels to reach the na

Question

A droplet of bile must pass through __named extraheptic channels to reach the named gallbladder and then it must passs through __named extrahepatic channels to reach the duodenal lumen.

A. 3-2

B. 3-3

C. 4-2

D. 4-3

E. none of the above

#2- Of the 3 morpholic features that result in the huge absorptive surface area of the small intestine, the one that contributes the most to increasing the sirface area is __ and the one that contributes the least to large absorptive surface area is __.

A. villi-microvilli

B. microvilli- circular folds

C. circular folds - microvilli

D. microvilli- villi

E. villi- circular folds

Explanation / Answer

1. Option B is correct. A droplet of bile must pass through right or left hepatic duct, common hepatic duct and cystic duct (extrahepatic channels) to reach the named gallbladder and then it must passs through common bile duct, pancreatic duct and ampulla of Vater (extrahepatic channels) to reach the duodenal lumen.

2. Option B is correct. Microvilli increases the surface area for absorption by 20 folds, villi increases by 10 folds and circular folds increases the surface area by 5 folds. Thus option B is correct.

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