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Details Title: Digestive Organs Description: Digestive Organs Total Flash Cards: 33 Created: 10/27/2005 06:31:18	To study from this set of flash cards, or to create your own your own study flash cards, register HERE. If you are already a registered user, CLICK HERE.
Cards Term Oral Cavity (1st chamber of the mouth) Definition chamber that extends from teeth/gums to pharynx Term Vestibule (2nd chamber of the mouth) Definition narrow space between teeth, cheeks and lips Term Mouth Definition Starting place for carb digestion; receives food and starts digestion by chewing 7 mixing with saliva; surrounded by cheeks, lips, tongue, and palate Term Palate Definition forms roof of oral cavity---------Anterior portion-hard palate----------Posterios portion- soft palate---------Extension of soft palate-uvula Term Palatine Tonsils Definition lymphatic tissue lateral to palate; protects body against infections Term Pharyngeal Tonsils (adenoids) Definition lymphatic tissue on posterior pharynx; protects body against infections Term Primary (deciduous) Teeth Definition number 20, erupt from 6-32 months, lost between 6-12 years Term Secondary (permanent) Teeth Definition push the primary teeth out of their sockets, number 32 (16 in each jaw), erupt from 6 yrs to adulthood Term Incisors Definition front teeth; chisel-shaped (4 central + 4 lateral), breaks food into bite-size pieces Term Cuspid Definition canine (eye) teeth; cone-shaped (4 total); grasp and tear food Term Bicuspids (premolars) Definition flattened surface; (first 4, second 4); grinding food particles Term Molars Definition flattened surface; (first 4, second 4, third 4); grinding food particles Term crown Definition exposed area of tooth Term Root Definition area below gum (gingiva) Term Enamel Definition covering on crown; Ca salts; hardest substance in body Term Dentin Definition bulk of tooth; substance similar to bone but harder Term Pulp Cavity Definition central cavity inside dentin Term Root Canals Definition located in pulp cavity with blood vessels and erves as well as connective tissue called pulp Term Cementum Definition thin layer of bonelike material enclosing the root, surrounded by periodontal ligament that attaches the tooth to the jaw Term Salivary Glands Definition secrete salive, function as lubrication, bind food together,********* begins chemical digestion of carbs *********** Term Enzyme salivary Amylase Definition breaks polysaccharides into disaccharides; starch to disaccharides and glycogen to disaccharides Term Parotid Salivary Glands Definition the largest salivary gland; lie between the skin of the cheek & the masseter muscle Term Submandibular Salivary Glands Definition floor of mouth; on the inside surface of the lower jaw Term Sublingual Salivary Glands Definition floor of mouth; inferior to the tongue Term 2 Types of cells composing each salivary gland Definition mucous cells-secretes mucus that binds food together====================serous cells-secretes watery substance containing the digestive enzyme salivary amylase Term Pharynx Definition cavity posterior to the mouth that connects the nasal and oral cavities with the larynx and esophagus; no digestion occurs but important swallowing mechanism Term Nasopharynx Definition interconnected with nasal cavity; passageway for air during breathing; location of auditory tubes Term Oropharynx Definition passageway for food from the mouth and for air from the nasal cavity Term Laryngopharynx Definition located inferior to oropharynx; passageway to the esophagus Term First Stage of Swallowing Mechanism (Voluntary) Definition food is chewed & mixed with saliva; then tongue rolls this mixture into a mass called bolus at back of pharynx Term Second Stage of Swallowing Mechanism (Involuntary) Definition sensory receptors are stimulated and swallowing relfex is triggered, epiglottis closes over larynx, muscles in lower pharynx relax so esophagus opens, food is forced into esophagus Term Esophagus Definition passageway for food from pharynx to stomach, location:mediastinum behind traches, many mucous glands Term Movement of Food Definition gravity, peristaltic waves from esophagus meet lower esophageal sphincter, sphincter muscles relax, swallowed food moves into stomach