Exam 3 Assignment

Exam #3 Assignment Bile salts aid protein digestion through their detergent action and facilitate protein absorption by participating in the formation of micelles. HCl in the stomach stimulates the release of gastrin.​ Parietal cells secrete the hormone gastrin into the blood in response to protein products in the stomach lumen and in response to alcohol. The accessory digestive organs include the salivary glands, the exocrine pancreas, and the biliary system.​ The disaccharidases located in the brush border membrane of the small intestine cells further reduce disaccharides and polysaccharides into the absorbable monosaccharide units of glucose, galactose, and fructose.​ The migrating motility complex is regulated between meals by what hormone?​ The products of lipase digestion are monoglycerides and free peptides.​ What are the four basic digestive processes? What are the main constituents of bile?​ What are the three phases of gastric secretion?​ What are the three segments of the small intestine called?​ What must be combined with vitamin B12 for it to be absorbed in the small intestine?​ What two plexuses are termed the enteric nervous system? What causes the colon's main motility?​ What cells of the stomach secrete pepsinogen?​ What compound coverts trypsinogen into trypsin?​ What type of enzyme hydrolyzes most of the small peptide fragments into their amino acid components, thereby completing protein digestion?​ Which section of the stomach has the thickest musculature? The muscularis externa, the major smooth muscle coat of the digestive tube, surrounds the submucosa. The small, fingerlike projection at the bottom of the cecum is the:​ What are the two components of the biliary system? At the outer limits of a muscle's length, it still can achieve about 80% of its maximal contraction strength. Both the thin and thick filaments change length during muscle fiber shortening.​ Ca2+ binding to tropomyosin causes myosin to change shape, physically moving it away from its blocking position.​ During muscle contraction, what becomes smaller? How many additional pathways supply ATP as needed during muscle contraction?​ How many steps in the muscle excitation, contraction, and relaxation processes require ATP? How many thin filaments are on each end of a sarcomere? In contrast to muscle spindles, which lie in the tendons of muscle, Golgi tendon organs are in the belly of muscle.​ Muscles that produce precise, delicate movements have fewer muscle fibers in their motor units compared to muscles made for powerful movements.​