Small Intestine and Associated Structures

Question 1

tube that carries chyme away from stomach and deposits it in the large intestine

Answer 1

small intestine

Question 2

three distinct parts of the SI

Answer 2

duodenum
jejunum
ileum

Question 3

the SI is suspended from the body wall by what

Answer 3

mesentery

Question 4

receives chyme through pyloric sphincter

Answer 4

duodenum

Question 5

most chemical digestion and absorption occur in this section

Answer 5

jejunum

Question 6

longest part of the SI

Answer 6

jejunum

Question 7

empties into large intestine

Answer 7

ileum

Question 8

ileum/LI intestine intersection in horse

Answer 8

cecum

Question 9

ileum/LI intestine intersection dog and cat

Answer 9

colon

Question 10

ileum/LI intestine intersection ruminant and pig

Answer 10

cecum and colon

Question 11

where are prominent Peyer’s patches found

Answer 11

ileum

Question 12

adaptions in the SI help increase what

Answer 12

surface area

Question 13

the SI is long with many _____ and _____

Answer 13

loops and coils

Question 14

folds in mucosal lining

Answer 14

plications

Question 15

finger like projections in mucosa

Answer 15

villi

Question 16

smaller projections off villi

Answer 16

microvilli

Question 17

what do the microvilli in the SI form

Answer 17

brush border

Question 18

found on villi and replace cells on villi as they are lost due to wear

Answer 18

intestinal crypts (crypts of Langerhans)

Question 19

lymphatic capillaries

Answer 19

lacteals

Question 20

lacteals carry absorbed lipids and fat-soluble substances to ____ ____ and into ____ _____

Answer 20

thoracic duct
vena cava

Question 21

where are lacteals found

Answer 21

on the villi

Question 22

blood capillaries in the villi collect some of the absorbed nutrients and transport them where

Answer 22

to the liver

Question 23

two hormones secreted by duodenal mucosa in the SI

Answer 23

cholecystokinin (CCK)
secretin

Question 24

CCK inhibits what

Answer 24

gastric emptying

Question 25

CCK causes increased secretion of ______ and _______ digestive enzymes

Answer 25

bicarbonate pancreatic

Question 26

gall bladder contraction is triggered by what

Answer 26

CCK

Question 27

CCK stimulates the secretion of what, from the duodenal mucosa

Answer 27

enteropeptidase

Question 28

stimulus for CCK secretion are high _____ acid or _____ acid concentrations OR low pH of _______ entering duodenum

Answer 28

amino fatty chyme

Question 29

what decreases HCl production in the stomach

Answer 29

secretin

Question 30

secretin increases ________ and _______ _______ secretions

Answer 30

pancreatic biliary bicarbonate