human nutrition Flashcards
name the two products of complete lipid digestion by lipase
fatty acids
glycerol
name a location in the digestive system where lipase digests lipds
ileum
suggest an optimum pH for digestion of lipids in the ileum
7-9
describe the action of the bile salts on lipids
emulsifies
name the structure inside each villus that absorbs the products of lipid digestion
lacteal
what is meany b the term digestion
breaking down of food into small soluble molecules
why is digestion necessary in humans
to make nutrients soluble
what name is given to the removal of undigested wastes from the human body
egestion
give the precise location where villi are most abundant
ileum
what is the main function of villi
to increase surface area
name the blood vessel that carries digested nutrients away from the digestive system
hepatic portal vein
to what organ in the body are digested nutrients away from the digestive system
liver
give one function of the liver
produces bile
name and explain the process of how food is moved along the digestive system
peristalsis - muscular contractions
give two reasons why digestion is necessary
to make food soluble
easier to absorb
