BIOD151 MODULE 3 EXAM 4 QUESTIONS WITH 100% APPROVED CORRECT ANSWERS GRADED A+ 2025

BIOD151 MODULE 3 EXAM 4 QUESTIONS WITH 100% APPROVED CORRECT ANSWERS GRADED A+ 2025 BIOD151 MODULE 3 EXAM 4 QUESTIONS 2025   BIOD151 MODULE 3 EXAM 4 QUESTIONS WITH 100% APPROVED CORRECT ANSWERS GRADED A+ 2025 Two divisions of the digestive system - CORRECT ANSWER alimentary canal and accessory organs seven parts of the gastrointestinal tract - CORRECT ANSWER mouth, pharynx, esophagus, stomach, small intestine, large intestine and anus six digestive accessory organs - CORRECT ANSWER teeth, tongue, gallbladder, salivary glands, liver, pancreas mouth opening - CORRECT ANSWER lips floor of the mouth - CORRECT ANSWER tongue walls of the mouth - CORRECT ANSWER cheeks roof of mouth - CORRECT ANSWER hard and soft palates two bones and membrane the tongue is attached to - CORRECT ANSWER hyoid and mandible bone and membranous lingual frenulum How many teeth are in the human adult and what do they do? - CORRECT ANSWER thirty-two teeth work together to tear, crush and grind food to mechanically digest food. What are the four types of teeth? - CORRECT ANSWER incisors, canines, premolars, molars incisors - CORRECT ANSWER two, chisel shaped for biting canine - CORRECT ANSWER one pointed for tearing pre-molars - CORRECT ANSWER two fairly flat for grinding molars - CORRECT ANSWER three flat for crushing What is the specific function of the salivary gland in the process of digestion? - CORRECT ANSWER Food is mixed and moistened with the saliva secreted from the salivary glands that contain enzymes that begin chemical digestion process by breaking down starch. Where are the taste buds located? - CORRECT ANSWER Primarily the tongue but also the surface of the mouth and wall of the pharynx. Describe the function of the tongue in the digestive process - CORRECT ANSWER tongue grips the food, constantly repositioning it between the teeth and forms the bolus that is pushed back to the pharynx to be swallowed. bolus - CORRECT ANSWER compact mass of food formed by chewing of the teeth and reposition by the tongue. three parts of the pharynx - CORRECT ANSWER nasopharynx, oropharynx, laryngopharynx through which sections of the pharynx does air travel? food? - CORRECT ANSWER air travels through all three sections food travels through oropharynx and laryngopharynx What prevents food from entering the lungs and why is this necessary? - CORRECT ANSWER The epiglottis covers the esophagus and prevent aspiration of food and liquid. Describe how the muscular layers in the pharynx assist with food passage. - CORRECT ANSWER The two layers of muscle, circumferential outer layer and inner longitudinal layer, alternatively contract to squeeze the food into the esophagus by peristalsis. Tissue layers of the esophagus - CORRECT ANSWER the innermost layer is the mucosa which secretes mucus into the interior the gastrointestinal tract, the second layer is the submucosa which contains blood and lymph vessels, lymph nodes, nerves, and mucous glands, the third layer is the muscularis externa which is made of two layers of muscle: the outer longitudinal fibers and inner circumferential fibers and the outermost layer is the serosa which is made up of cells that make serous fluid. Peristalsis - CORRECT ANSWER the squeezing of food through the GI tract by the alternating contraction of the sets of longitudinal and circumferential muscles. three main divisions of the tooth - CORRECT ANSWER crown, neck, root three types of papillae - CORRECT ANSWER filiform, fungiform, circumvallate Which papillae contain taste buds - CORRECT ANSWER Circumvallate and fungiform Describe the shape of the stomach and its location relative to the abdomen and diaphragm. - CORRECT ANSWER stomach is a backward C-shaped organ located along the left side of the abdomen and below the diaphragm Describe the passage of food into and out of the stomach - CORRECT ANSWER Food enters from the esophagus via the cardioesophageal sphincter and exits the stomach via the pyloric sphincter into the small intestine