Digestive System 3- Unit 4 Flashcards
Small intestine duodenum
First 10 inches
What enters the duodenum from gallbladder, stomach, and pancreas?
Bicarbonate (epithelium of main pancreatic duct)
Chyme (stomach)
Digestive enzymes (acinar cells)
Bile salts (liver)
What is absorbed in small intestine?
Lipids, proteins, complex carbohydrates
Small intestine modifications for surface area
Plicae Circularis- circular folds
Villi- ciliated simple columnar epithelium on plicae circularis
Purpose of lacteal
help with lipid absorption, found in villi
Brush-Border
Microvilli that digest carbs on villi of small intestine
What is absorbed in the large intestine?
Water and electrolytes
Hemmorrhoid
Swollen vein in rectum
How is the anal canal epithelium different from digestive tract?
Anal- Stratified squamous
Digestive- Simple columnar
In embryonic development, ligamentum teres drains blood into
Portal vein of liver
Portal triad of liver
Hepatic artery (into liver)
Bile duct (bile to small intestine)
Portal vein (from digestive system to liver)
Which major blood vessel does the central vein of a liver lobule drain towards?
Inferior vena cava
What surrounds islet cells in pancreas?
Acini cells
Pancreas acini cells produce
Digestive enzymes (exocrine)
Pancreatic ducts produce
Bicarbonate (exocrine)