Physiology 2130 Lecture Notes - Lecture 15: Pylorus, Intestinal Villus, Digestive Enzyme

• School: Western University
• Department: Physiology
• Course: Physiology 2130
• Professor: Carlie Bell

Document Summary

List the building blocks for carbohydrates, proteins, and lipids: carbohydrates are made up of monosaccharides, proteins consist of long chains of aa linked together. Fats/lipids include triglycerols, phospholipids, cholesterol and long chain fatty acids. List the names of the salivary glands and describe their functions. Saliva is secreted by 3 glands: parotid, submandibular and sublingual, these glands can produce up to 2 l of saliva each day. Saliva helps to lubricate the bolus of food and begins digesting carbohydrates because it contains the enzyme amylase. The production and secretion of saliva is under the control of the autonomic ns. The uvula of the soft palate closes over the nasopharynx. The larynx is lifted by muscles in the neck, and the epiglottis bends back over the glottis, covering the larynx. The bolus moves the cardiac orifice (or lower esophageal sphincter) and into the stomach by a wave of smooth muscle contraction called peristalsis.