BIOL 235 Chapter 24 (Graded A+ Already)

digestion correct answers The process by which the body breaks down food into small nutrient molecules digestive system correct answers the organs that break down food so that it can be used by the body 2 groups of organs in digestive system correct answers 1. alimentary canal (GI tract) 2. accessory digestive organs gastrointestinal tract (alimentary canal) correct answers a continuous tube from the opening of the mouth all the way to the anus includes: mouth, most of pharynx, esophagus, stomach, small and large intestine -muscular contractions break down and propel food accessory digestive organs correct answers teeth, tongue, salivary glands, liver, gallbladder, pancreas 6 basic processes of digestive system correct answers 1. Ingestion 2. Secretion 3. Mixing and propulsion/movement 4. Digestion 5. Absorption 6. Defecation/Elimination ingestion correct answers taking food and liquid into mouth secretion correct answers release of water, acid, buffers and enzymes into lumen of GI tract mixing and propulsion correct answers churning and movement of food through GI tract motility correct answers The capability of the GI tract to move and mix material along its length mechanical digestion correct answers Physical breakdown of large pieces of food into smaller pieces chemical digestion correct answers molecules of food are split; digestive enzymes catalyze reactions absorption correct answers passage of materials through the walls of the small intestine into the bloodstream defecation correct answers elimination of feces GI tract layers correct answers 1. Mucosa