Small and Large Intestine

Question 1

mucosal surface of small intestine

Answer 1

has folds, villi, microvilli, crypts/glands, absorbs nutrients, water and electrolytes

Question 2

mucosal surface of large intestine

Answer 2

has folds, microvilli, crypts/glands, absorbs water, electrolytes

Question 3

propulsive movements

Answer 3

move contents towards rectum

Question 4

what do coloncolonic, gastrocoli, and duodenocoli reflex do

Answer 4

start propulsive movement

Question 5

what are the 4 key features of defectation reflex

Answer 5

intrinsic, parasympathetic, additional afferent signal, desired defecation

Question 6

intrisic feature of defection

Answer 6

mediated by ENS

peristalitic wave that is relatively weak

Question 7

parasympathetic feature of defection

Answer 7

greater contracility than intristic

Question 8

addition afferent signals of defecation

Answer 8

recruiting more muscles from abdomen

pelvic floor relaxes and pulls the anal ring outward

Question 9

what are 3 anatomical features tha tgive small intestines its larger SA

Answer 9

circular folds, villi, microvilli

Question 10

positive regulation of brunner’s gland

Answer 10

chyme, ENS, CCK, secretin

Question 11

negative regulation of brunner’s gland

Answer 11

sympathetic

Question 12

cells of brunenr’s galnd

Answer 12

epithelial

Question 13

secretions of brunner’s gland

Answer 13

mucus, bicarb

Question 14

postive regulation of crypts of lieberkun and villi

Answer 14

chyme, ENS, CCK, secertin

Question 15

negative regulation of crypts of lieverkin and villi

Answer 15

sympathetic

Question 16

cells of crypts of lieerkun and villi

Answer 16

goblet, secretory, enterocytes, absorptive enterocytes

Question 17

what doe goblet cells secrete

Answer 17

mucus

Question 18

what do secretory cells secrete

Answer 18

water

Question 19

what do enterocytes secret

Answer 19

electrolytes

Question 20

what do absoptive enterocytes secrete

Answer 20

expression of peptidases, sucrase, maltase, lactase, lipase

Question 21

what is peristalisis stimulated by

Answer 21

Ach

Question 22

what is peristalis inhibited by

Answer 22

VIP, NO

Question 23

what affects growth of intestinal microbiotic

Answer 23

salvia, acid, fluid/electrolytes, bile
mucosal immunity
intestinal immunity
pharm

Question 24

what are functions of interstinal microbiota

Answer 24

conversion of primary to secondary bile acids
deconjuation of compounds conjugated in liver
nutrient salvage
detox
suppression of pathogenic organism

Question 25

inflammotry diasese

Answer 25

malaborptive, impaired water and electrolyte uptake causing dehydration