Vocab Chapter 6 lesson 2 Flashcards
Denaturation
The process of changing a protein’s shape.
Gastrin
A hormone released when food is ingested to stimulate release of digestive fluids.
Pepsinogen
A proenzyme secreted by the stomach as a precursor to pepsin.
Pepsin
An enzyme in the stomach that begins breaking peptide bonds.
Duodenum
It is the first section of the small intestine where some digestion occurs, and it is located immediately after the stomach and leads into the jejunum.
Secretin
A hormone that stimulates the liver and pancreas to produce bile and bicarbonate; inhibits gastrin release.
Cholecystokinin
A hormone secreted by the duodenum that causes release of enzymes and bile.
Protease Enzymes
Enzymes in the small intestine that break long peptide chains into shorter peptide chains.
Peptidase
An enzyme that breaks down small peptides.
Aminopeptidases
Enzymes that cleave individual amino acids from a peptide chain so they may be absorbed.
Hepatic Portal Vein
The vein that transports blood from the spleen, stomach, pancreas, and the intestinal tract to the liver.
Collagen
A protein formed of a triple-helix structure with great tensile strength, found primarily in skin, muscles/connective tissue, and bones.
Tensile Strength
Ability of a material to resist breaking under tension.
Elastin
A protein with high elasticity, found mainly in the skin.
Keratin
A protein found in hair and nails.
