HLSC 2F95 Lecture Notes - Lecture 8: Parotid Duct, Frenulum Of Tongue, Salivary Gland
17 Nov 2016
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Swirling, mixing, churning, and propulsion also mechanically process. Digestion: chemical and enzymatic breakdown to allow for absorption. Absorption: movement of organic molecules, electrolytes, vitamins and water across the digestive tract epithelium and into the interstitial fluid of digestive tract. Excretion: waste products secreted into digestive tract by accessory glands (especially liver) Compaction: progressive dehydration of indigestible materials and organic wastes prior to elimination. Oral cavity, salivary glands, pharynx, esophagus, stomach. Peristalsis: contraction of circular muscles behind bolus, contraction of longitudinal muscles ahead of bolus, contraction of circular muscle layer forces bolus forward. (cid:272)hur(cid:374) a(cid:374)d frag(cid:373)e(cid:374)t digesti(cid:448)e (cid:373)aterials, (cid:373)i(cid:454)i(cid:374)g it (cid:449)ith se(cid:272)retio(cid:374)s. do(cid:374)"t produ(cid:272)e movement in any particular direction. The oral cavity: parotid salivary glands, largest salivary glands. Pharyngeal muscles involved in swallowing: pharyngeal constrictors: superior, middle and inferior. Push the bolus toward the esophagus: laryngeal elevators. Hollow muscular tube from the pharynx to the stomach. Enters the peritoneal by passing through the upper and lower: located:
