23D Homework

the right colic, left colic, and sigmoid flexures Materials pass the cecum and then the right colic, left colic, and sigmoid flexures on their way to the rectum and anus.

water absorption and feces elimination Though most water is absorbed in the small intestine, the absorption of most remaining water and the elimination of feces are the primary physiological functions of the large intestine. The large intestine also provides a transport route and a surface for healthful bacteria.

pg. 907

synthesis of intrinsic factor Intrinsic factor is produced in the stomach; it is required for absorption of vitamin B12 in the small intestine.

inhibits the activity of the myenteric nerve plexus The myenteric nerve plexus is the major nerve supply that controls gastrointestinal tract motility.

monosaccharides Monosaccharides are simple sugars, the building blocks of complex carbohydrates such as starch or glycogen.

protease: lipid digestion Proteases digest proteins.

lipid emulsification

occurs by simple diffusion because lipids are able to penetrate the hydrophobic fatty acid tails within the plasma membrane

amylase

lipase

trypsin