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Published byTracey Davidson Modified over 9 years ago
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URINARY SYSTEM “The urinary system rids the body of nitrogen wastes while regulating water, electrolyte, and acid-base balance of the blood.” -Elaine Marieb Need to add tissue in for honors; accidently deleted
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kidneys Urine formation by filtering blood Urine formation by filtering blood Regulates blood levels of: ions, water, pH Regulates blood levels of: ions, water, pH
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ureters Connect kidneys to posterior bladder Peristalsis (urine) goblet cells = secretes mucous to protect cells from acidic urine,
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Urinary bladder collapsible, muscular sac Located posterior to pubic symphysis Stores urine Sphincter = skeletal muscle Micturition: stimulated by stretch receptors to spinal cord (S2 and S3) to trigger a spinal reflex causing urination.
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urethra Bladder to exterior Bladder to exterior Empties bladder by peristalsis Empties bladder by peristalsis Males: Males: –2 functions/2 systems: carries urine & semen
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Urinary tract infections (UTI) More females More females Symptoms: painful urination, urinary urgency and frequency, fever, cloudy or blood-tinged urine, even back pain and severe headache Symptoms: painful urination, urinary urgency and frequency, fever, cloudy or blood-tinged urine, even back pain and severe headache Bacteria can spread and cause bladder infection or kidney infection Bacteria can spread and cause bladder infection or kidney infection
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What is urine? Mostly water Mostly water Solutes: urea (from breakdown of protein), uric acid (from breakdown of nucleic acids), creatinine (from breakdown of creatine phosphate in muscle fibers), sodium, potassium, ammonia, Solutes: urea (from breakdown of protein), uric acid (from breakdown of nucleic acids), creatinine (from breakdown of creatine phosphate in muscle fibers), sodium, potassium, ammonia, NOT FOUND: glucose, proteins, rbc, hemoglobin, wbc, and bile NOT FOUND: glucose, proteins, rbc, hemoglobin, wbc, and bile
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