BI 103 Lecture Notes - Lecture 7: Trachea, Gallbladder, Unix System Iii
24 May 2017
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Exam #1 next monday promptly 7pm - pencil, eraser, photo id (50 minutes, 40 questions) Basic structures and functions of the digestive system: nutrients: essential for cell growth & maintenance, proteins, fats, carbohydrates, vitamins, minerals, water, dietary fiber, take in oxygen, amino acids, sugars d. Propulsion (movement) - smooth muscle i: mechanical breakdown - chewing iii. iv, upper g. i. t. Absorption of nutrients - stomach: mouth i. ii. Salivary glands: lubricates food for swallowing and digestive, starts the chemical process in a digestive fashion, fluid & enzymes. Two tubes - epiglottis separates the two tubes: ate or drank : trachea tube so you don t choke during surgery iii. iv, esophagus i. ii. iii. Lined with thick tissue - epithelial surrounded by smooth muscle tissue. Peristalsis - we have muscle contracting food through system. Reverse peristalsis - take in something toxic or disease in stomach. Can save someone"s life, poison in children: stomach i. ii. iii. iv.
