Digestive System Revision 61-75

The figure shows the organs of digestive system (labeled A-F). Match each organ with its function. relies on peristalsis to move food to the stomach E produces bile A mechanical and chemical digestion begins here D hydrochloric acid is released to promote digestion of proteins F releases bile into the duodenum B secretes bicarbonate and digestive enzymes into the small intestine C The process by which food is propelled through the digestive tract by alternating contraction and relaxation of smooth muscle is: elimination. secretion. chemical digestion. peristalsis. absorption. Which major digestive process involves nutrient molecules passing across the mucosal layer of the gastrointestinal tract into the blood or lymph? elimination absorption digestion secretion mechanical processing and movement During swallowing, epiglottis bends to close the trachea. skeletal muscle in the esophagus contracts slightly. the tongue flattens to the bottom of the mouth. salivary secretions stop. the hard palate rises to close the nasal passages Which one of the following components of saliva has antibacterial properties? sodium bicarbonate water mucus lysozyme HCl Gastric juice in the stomach is composed of; HCL, fluids secreted from gastric glands,mucus, pepsinogen. HCL, mucus,gastrin HCL, secretin, saliva. pepsinogen, secretin, gastrin fluids from gastric glands only. The watery mixture of partially digested food produced in the stomach is called bolus. chyme. segmentation. dentin. mucin Pepsin is a digestive enzyme that specifically targets fatty acids. steroids. starch. glycogen. protein. Nutrient-rich blood moves from the small intestine to the liver via the pancreatic duct. lacteal vessels. the pulmonary circuit. the hepatic portal system arterial flow from the gastrointestinal tract to the liver Bile assists in the chemical digestion of triglycerides by hydrolyzing them to glycerol and fatty acids. emulsifying large fat droplets into tiny ones, providing more surface area for enzymes. breaking peptide bonds and hydrolyzing them to amino acids forming chylomicrons. assisting with the active transport of triglycerides into the blood. All of the following are involved in the digestion of proteins EXCEPT which one? pepsin amylase carboxypeptidase chymotrypsin trypsin Bacteria residing in the large intestine release vitamin K which is absorbed by the human host and used for the process of blood clotting. true false Gastrin is a hormone secreted by the stomach true false Secretin modulates digestion by acting as an enzyme in the duodenum triggering bile release into the intestine. triggering buffer release from the pancreas. acting as an enzyme in the stomach. triggering acid release in the stomach In which of the following structures does absorption of water, vitamin K, and salt occur? large intestine small intestine liver stomach pancreas fill in the table below with the correct information about carbohydrates digestion enzymes for carbohydrates digestion source where active salivary amylase salivary glands mouth pancreatic amylase pancreas small intestine intestinal enzymes(Disaccharidase) small intestine small intestine