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Digestive/ Urinary System P.5 Yaritza Perez (digestive enzymes (DNA/RNA…
Digestive/ Urinary System P.5 Yaritza Perez
Major functions of the Digestive system
digestion (breakdown) and absorption of food for metabolism (energy and growth & repair of tissues)
Major functions of the Urinary system
Elimination of waste products
Nitrogenous wastes
Toxins
Drugs
Regulate aspects of homeostasis
volume & chemical makeup of the blood
water & electrolyte balance & acid base balance in the blood
Produce hormones
Erythropoletin: red blood cell production
Renin: regulates blood pressure & kidney function
Major organs of the DS
mouth, pharynx, esophagus, stomach, small intestine, large intestine,
Accessory organs- teeth, tongue, salivary gland, liver, gallbladder, pancreas
digestive enzymes
proteins (stomach & small )
pepsin- break protein -> peptide
protease- break peptide-> amino acids
carbohydrates ( mouth & small intestine)
polysaccharides-> disccharides monosacchariches
DNA/RNA (pancreas)
nucleic acids-> nucleotides
Nuclease- break nucleic acid into nucleotides
lipids (small intestine)
Fats-> fatty acids
lipase- breaks fats into faty acids & glycerol
Maltase- glucose
lactase- glucose & galactose
sucrase-glucose&fructose
Major organs of the US
kidneys, ureters, urinary bladder, uretha
location of digestion & absorption of each macromolecule
absorption- chemically digested food moves from intestine into blood and lymph small intestine 90%
contains villi & microvill for absortion
water, carbohydrates (blood), proteins (blood), tacts (lactals) vitamins & minerals
3 sections
1.Duodenum- most fixed in place
Jelunum- absorption (circular folds to increase surface area)
Ileium- aborbs vitamins & bile salts
Layers of GI tract
mucous- mucous membrane- produces mucus for reduction of friction & protections
Submucosa- submucosal plexus/ autonomic nerve suplly
Muscularis Layer- two layer of smooth muscle to allow perstalsis & segmentation
serosa- outer layer of the GI tract
Nephron
the structural & function units of the kidsneys
responsible for forming urine
each nephron consits of glomerules & renal tubule
disorders of the DS
Bowe Disease- a chronic complex intestinal condition that cause inflammation in the digestive tract
cholecystitis- an inflammation of the gall bladder
disorders of the US
kidney stones
bladder cancer
interstitial cystisis