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Week 2/15-2/22 Nutrition notes

by: Erica Jingozian

Week 2/15-2/22 Nutrition notes NUSC 1165

Erica Jingozian
GPA 3.5
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About this Document

Notes with material that will be covered on exam 2
Fundamentals of Nutrition 
Stacey Mobley
Class Notes
nutrition, notes, UCONN




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This 4 page Class Notes was uploaded by Erica Jingozian on Tuesday February 23, 2016. The Class Notes belongs to NUSC 1165 at University of Connecticut taught by Stacey Mobley in Spring 2016. Since its upload, it has received 95 views. For similar materials see Fundamentals of Nutrition  in Nursing and Health Sciences at University of Connecticut.

Similar to NUSC 1165 at UCONN

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Date Created: 02/23/16
Week 2/15-2/22 Nutrition 02/23/2016 ▯ IMPORTANT LECTURE ▯ ▯ Overview of the GI tract  Mouth- oral cavity o Mastication- chew, necessary to increase surface area so the enzymes can work o Salivation- lubricates the food, mucus, enzymes o Bolus- once that food has been mechanically broken apart and mixed with saliva it forms a ball.  Deglution- act of swallowing o Goes down esophagus  Lower esophogal sphincter-muscle that stays contracted until food needs to pass through o Enters your stomach o Mixes with gastric juices, contains acid and mucus o Chyme – gets squirted through your pyloric sphincter  Chyme enters small intestine o digest  Enters colon o Create feces o Anal sphincter ▯ ▯ 2/15 ▯ Bioavailability (Journey of a nutrient) ▯ On exam 2 #17 answer: Jordan ▯ ▯ If someone is consuming a lot of protein, protein will provide amino acids, amino acids enter blood and all cells use amino acids. After cells used up all the amino acids they need, the rest will be excreted in the urine.  Same thing with sodium ▯ ▯ Small intestine  Finger like projections- villi o Microvilli- has cells all over it  Cells that line microvilli- mucosal cells  Hollow center part- lumen ▯ Digestive Motility  Neuromuscular system  Act of swallowing- deglutition  Don’t want the bolus to go into your trachea, have an epiglottis. Closes your air way so the bolus of food will travel to your esophagus.  If someone has problems with their neuromuscular system, their epiglottis won’t close o Newborns o Small children o Elderly o Stroke victims o Dysphagia- issues with swallowing  Gastroparesis- motility of your stomach stops working o Result of diabetes ▯ Nerves and Muscles  Neuromuscular junction ▯ ▯ Oral Cavity  Mastication o Act of chewing o Increases surface area o Mechanical  Salivation o Saliva contains digestive enzymes o Salivary amylase- break down amylose (type of polysaccharide) o Amylose  oligosaccharides (20 or so sugars) o Lingual lipase (only in newborns/infants)  Breaks down lipids  Lipids  fatty acids ▯ 2/17 ▯ Synthetic Vitamin B12  Sublingual Vitamin B12 o Important for individuals who have problems with their stomach  Aspirin- ASA o Can absorb in your mouth  Dental caries o Cavities- result of bacteria that produces acid o Bacteria-sugars-fermentation-acid ▯ ▯ Disaccharides  Sucrose  Lactose  Maltose ▯ Monosaccharides- one sugar  Glucose  Fructose  Galactose ▯ ▯ Dysphagia  Difficulty swallowing  Neuromuscular disease- will affect your ability to chew or swallow ▯ ▯ Dysguesia  “guesia” taste  “dys” difficulty  Zinc deficiency ▯ ▯ Xerostomia  Dry mouth  Have problems lubricating the food ▯ ▯ Clinical Correlates ▯ Gastro esophageal Reflex Disease (GERD)  1. Spicy foods can cause LES to open up o gastric irritants: Chocolate, Caffeine, peppermint, ETOH (alcohol) ▯ Peptic Ulcers  75% due to bacteria Helicobacter Pyloric (H.Pylor) o acidophilic ▯ Gastric Bypass  Vit. B12 deficiency ▯ Gastro paresis  Issues w/ gastric motility (decrease)  Nerve damage (neuropathy)  Diabetes (blood glucose is very high) ▯ ▯ ▯


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