BIOL 1106 Lecture Notes - Lecture 13: Basal Metabolic Rate, Serous Membrane, Submucosa
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BIOL 1106 Full Course Notes
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Document Summary
Human nutrition: source of energy and raw materials, calories and calories (kilocalories, basal metabolic rate (bmr, proteins, essential amino acids, carbohydrates, fats, vitamins, minerals, water. The human digestive system: tubular gastrointestinal (gi) tract, accessory organs. Tissues of the digestive tract: mucosa, epithelial, submucosa, connective, muscularis, smooth muscle, serosa, epithelial. The mouth and teeth: many vertebrates have teeth used for chewing or mastication, birds, lack teeth, break up food in a two-chambered stomach. Ingestion: salivation, 3 pairs of salivary glands secrete saliva, water (99. 5%, mucous, salivary amylase, antibacterial compounds. Esophagus: muscular tube connecting the pharynx to the stomach, peristalsis, swallowing center in brain stimulates successive one-directional waves of contraction. Stomach: convoluted surface allows expansion, mixes food with gastric juice, mucus, hcl, pepsin (pepsinogen in its inactive form) Location of most digestion and absorption: consists of, duodenum. Ileum: folded with epithelium to form villi and microvilli to participate in digestion and absorption.
