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Excretory and urinary systems

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Excretory and urinary systems

  1. 1. Excretory and Urinary Systems<br />7SCIENCE: Thurs. Dec. 2nd<br />
  2. 2. What is the purpose of the excretory system?<br />To remove and eliminate waste from different systems in your body!<br />Examples:<br />Digestive<br />Respiratory <br />What would happen if these wastes were not eliminated?<br />
  3. 3. What is the purpose of the urinary system?<br />Urinary system is part of the excretory system, and made up of excretory organs<br />Remove wastes from your blood <br />These wastes are produced from using nutrients in your body<br />Also removes excess water and balances salt concentrations<br />Which body systems are related to the urinary system?<br />
  4. 4. Organs of the urinary system<br />Kidneys <br />Nephrons<br />Ureters<br />Bladder<br />Urethra <br />
  5. 5. KIDNEYS<br />Major organ of urinary system: 2 bean shaped kidneys<br />Filters blood that has collected waste from cells<br />All of your blood passes through your kidneys many times a day<br />Each kidney contains around 1 million nephrons <br />Tiny filtering units <br />Cup and duct structure<br />
  6. 6. URETERS, BLADDER AND URETHRA <br />Ureters: <br />Tubes that lead from kidney to the bladder <br />Bladder:<br />Elastic muscular organ that holds urine until it leaves the body<br />Urethra:<br />Tube that carries urine from bladderto outside of your body<br />

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