Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Ch 14 Digestive System- Fx and Organs through the
Transcript
Chapter 14 The Digestive System and Body Metabolism Lecture Presentation by Patty Bostwick-Taylor Florence-Darlington Technical College © 2015 Pearson Education, Inc. Pages 463-472 Ingestion- taking in food Digestion- breaking food down Absorption- nutrients into the bloodstream Defecation—elimination of indigestible waste © 2015 Pearson Education, Inc. Two groups: ◦ Alimentary canal (gastrointestinal or GI tract)— continuous, coiled, hollow tube (aka gut) These ingest, digest, absorb, defecate ◦ Accessory digestive organs Includes teeth, tongue, salivary glands, pancreas, liver, gall bladder © 2015 Pearson Education, Inc. Mouth (oral cavity) Tongue Parotid gland Sublingual gland Submandibular gland Salivary glands Pharynx Esophagus Stomach Pancreas (Spleen) Liver Gallbladder Small intestine Anus Duodenum Jejunum Ileum Transverse colon Descending colon Ascending colon Cecum Sigmoid colon Rectum Appendix Anal canal Large intestine a continuous, coiled, hollow tube (about 30ft) ◦ runs through the ventral cavity from stomach to anus: Structures include: ◦ ◦ ◦ ◦ ◦ ◦ ◦ Mouth Pharynx Esophagus Stomach Small intestine Large intestine Anus © 2015 Pearson Education, Inc. Mastication (chewing) of food ◦ Tongue mixes masticated food with saliva initiates swallowing ◦ Taste buds are specialized epithelial cells called gustatory cells Contain taste receptors © 2015 Pearson Education, Inc. Upper lip Gingivae (gums) Hard palate Soft palate Uvula Palatine tonsil Oropharynx Tongue (b) Food/fluid moves from the mouth into the: 1. Oropharynx 2. Laryngopharynx Peristalsis: the mechanism that propels food and fluid through these parts of the pharynx © 2015 Pearson Education, Inc. Nasopharynx Hard palate Oral cavity Soft palate Lips (labia) Palatine tonsil Vestibule Lingual tonsil Lingual frenulum Tongue Hyoid bone Trachea (a) Uvula Oropharynx Epiglottis Laryngopharynx Esophagus Runs from pharynx to stomach through the diaphragm (about 10 inches long) Relies on peristalsis to move food and fluids to the stomach © 2015 Pearson Education, Inc.
