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THE JOURNEY OF DIGESTI VE SYSTEM - YOUTUBE THE DIGESTIVE SYSTEM

THE JOURNEY OF DIGESTIVE SYSTEM - YOUTUBE THE DIGESTIVE SYSTEM

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  • THE JOURNEY OF DIGESTIVE SYSTEM - YOUTUBE THE DIGESTIVE SYSTEM
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  • I. OVERVIEW * break down food into small molecules that can be ABSORBED and used by cells in the body * ALIMENTARY CANAL is 9 m long
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  • II. MOUTH * MECHANICAL & CHEMICAL digestion * enzymes in saliva (ex. AMYLASE breaks down starch) * BOLUS - ball of chewed food
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  • III. ESOPHAGUS * PERISTALSIS moves food by muscle contractions (contract & relax)
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  • IV. STOMACH * PEPSIN, HCl acid, & mucus CHEMICAL digestion * PROTEIN DIGESTION STARTS HERE!!! (add this) * CHYME THIN, SOUPY LIQUID
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  • V. SMALL INTESTINE * covered w/ VILLI (fingerlike projections lined with capillaries; increases SURFACE AREA) * nutrients absorbed INTO BLOOD (CARBS & PROTEINS) * JEJUNUM, duodenum, & ileum
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  • VI. LARGE INTESTINE * water, cellulose, & other UNDIGESTABLE substances left behind * WATER reabsorbed & VITAMINS absorbed * NO DIGESTION TAKES PLACE!!! * FECES formed stored in RECTUM - eliminated through ANUS
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  • VII. ACCESSORY ORGANS A. PANCREAS * pancreatic juice w/ENZYMES (pancreatic DUCT delivers to small intestine) * neutralizes STOMACH ACID
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  • B. LIVER * produces BILE (breaks down fats)
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  • C. GALLBLADDER * stores BILE
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  • My X Ray swallows YouTube Peristaltic Wave in the Gastric Antrum YouTube Peristalsis... what your insides do that you can't see YouTube Peristalsis... what your insides do that you can't see YouTube Peristalsis after a PB &J sandwuch - YouTube
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  • THE EXCRETORY SYSTEM I. OVERVIEW * maintain HOMEOSTASIS by removing WASTE products from the BLOOD, regulate blood VOLUME, & maintain pH
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  • I. SKIN * excrete SWEAT water, salts, UREA
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  • UREA??? * produced when the liver breaks down protein * average person excretes about 30 grams of urea a day, mostly through urine, but a small amount is also secreted in perspiration * one million pounds of urea is manufactured in the U.S. each year, most of it used in fertilizers * used commercially and industrially to produce some types of plastics, animal feed, glues, toilet bowl cleaners, dish washing machine detergents, hair coloring products, pesticides, and fungicides
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  • II. LUNGS * excrete CARBON DIOXIDE
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  • III. KIDNEYS * blood cleaned & FILTERED (every 45 min. all blood) * URINE = urea, water, & other waste * made up of millions of NEPHRONS - filtration, REABSORPTION, secretion _________ _________ _________ ________ ? 1 of 5 Select this picture Prints best up to 11x14 Why?
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  • Dialysis mathew's story
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  • UROPHAGIA (ewwwgross!!!) * Urophagia is the consumption of urine * Urine, which consists almost entirely of water, is completely sterile when it leaves the body. * auto-urine therapy is said to boost the immune system, cure migraines and other chronic conditions, stave off a cold and work wonders on eyesight problems; can work wonders on skin conditions, such as eczema or psoriasis; can apply it directly for athlete's foot, bee stings and jellyfish stings; you can gargle it for toothache and gum disease. * Bacterial infections of the urinating person's urethra, or disease in the person urinating may pose a risk.