NRSG 202 Lab: Digestion cont.

cystic duct

spleen

Circular folds (plicae circulares)

function of circular folds

increase surface area

villi

function of villi and micro villi

increase surface area for absorption

Microvilli

goblet cells

Absorptive cells in small intestine

look at lecture

intestinal crypts (crypts of Lieberkuhn)

Lacteals in small intestine absorb

capillary beds small intestines

Peyer's patches

Peyer's patches function

capture and destroy bacteria

function of intestinal crypts

provide stem cells for renewal of the intestinal epithelium

function of lacteals

absorb digested fat and deliver fatty lymph to the blood

function of goblet cells

secrete mucus

function of absorptive cells

uptake digested nutrients

Gastroesophageal sphincter

fundus of stomach

muscularis layer of stomach

cardia of stomach

body of stomach

F

lesser curvature

pylorus

pyloric sphincter

rugae of mucosa

greater curvature

gastric pits

parietal cells stomach

B

mucous neck cells

A

chief cells stomach

D

gastric glands

C

G cells

circled section

function of mucous neck cells

secrete mucous

function of parietal cells

secrete HCl

function of chief cells

secrete pepsinogen

function of G cell

secretes the hormone gastrin

what does lipases break down

lipids

Where is lipase produced?

Pancreas, mouth, stomach

what does protease break down

proteins

Where is protease produced?

Stomach, pancreas, small intestine

what does peptidases break down

proteins

where is peptidase produces

stomach

small intestine

pancreas

hepatocytes

central vein of liver

hepatic sinusoid

look at pdf

portal triad of liver

Kupffer cells

Sphincter of Oddi

acinar cells of pancreas

islets of Langerhans

what happens in large intesinte

absorption of water

what happens in small intestine

nutrients are absorbed

what happens in stomach

mixing and enzymatic digestion

sigmoid colon