digestive

rugage: folds in mucosa of stomach that expand gastric lumen.

Gastric pits: depressions that open onto the gastric surface.

gastric glands secrete 1500 ml of juice a day.

Parietal cells secrete intrinsic factor.

Chief cells secrete pepsinogen.

pepsinogen becomes pepsin due to HCL.

newborn stomach produce milk digesting enzymes (renin and gastric lipase).

G cells produce gastrin that stimulates secretion and contractions.

pancreatic duct: delivers secretions of pancreas to duodenum.

pancreatic acini: secrete pancreatic juice into small intestine.

pancreatic alpha amylase: breaks down startches.

pancreatic lipase: breaks down complex liquids.

Nuclease: breaks down DNA or ENA.

Proteolytic enzymes: break apart proteins (proteases and peptidases)

Proteases break large protein complexes.

peptidases break peptide chains into amino acids.

Liver has four lobes (caudate and quadrate).

Falciform ligament (divides left and right lobes of liver.