Roberts Kidneylesson

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A PowerPoint of the Urinary System.

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Roberts Kidneylesson

  1. 1. Robert Bright<br />Dr. Mims<br />IDT 7061<br />Project 6<br />
  2. 2. 3 major functions:<br />Excretion: removal of organic wastes from body fluids (KIDNEYS)<br />Elimination: discharge of those wastes into the environment (URINARY BLADDER, URETHRA)<br />Homeostatic regulation of volume and solute concentration of blood plasma<br />The Urinary System<br />
  3. 3. The Urinary System<br />
  4. 4. Kidneys<br />Located on either side of vert. Column<br />Left is slightly superior to right<br />Each kidney is protected and stabilized by 3 layers of connective tissue<br />Renal capsule (covers entire outer surface)<br />Adipose capsule (adipose tissue that surrounds renal capsule)<br />Renal fascia (anchors the kidney to surrounding structures)<br />
  5. 5. Kidneys Cont’d<br />Renal cortex: superficial part, in contact with the renal capsule<br />Renal medulla: contains 16-18 renal pyramids<br />Renal pyramids: base abuts the cortex, tip (renal papillae) projects into renal sinus<br />Renal columns separate renal pyramids<br />Hilus: point of entry and exit for blood vessels, nerves, and ureter<br />
  6. 6. Blood Supply to Kidneys <br />
  7. 7. Urine Formation<br />3 Basic Processes <br />Filtration: blood pressure forces water and solutes across the wall of the glomerular capillaries and into the capsular space<br />Reabsorption: removal of water and solutes from the filtrate; occurs after filtrate has left renal corpuscle<br />Secretion: transport of solutes from the peritubular fluid into tubular fluid; backup process for filtration<br />
  8. 8. ADH= antidiuretic hormone<br />3 organic waste products: Urea, creatinine, and Uric acid <br />These can only be eliminated from the body when dissolved in urine, so there is always some water loss<br />
  9. 9. The End!<br />

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