1 / 11

PRODUCTION OF URINE

PRODUCTION OF URINE. Mladen Tomas Mentor: A. Žmegač Horvat. Urine production : 1. filtration 2. reabsorption 3. secretion. FILTRATION. renal artery → afferent arterioles blood - passes through the membranes of Bowmann’s capsule: 1. osmosis 2. diffusion

nailah
Télécharger la présentation

PRODUCTION OF URINE

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. PRODUCTION OF URINE Mladen Tomas Mentor: A. Žmegač Horvat

  2. Urine production: 1. filtration 2. reabsorption 3. secretion

  3. FILTRATION • renal artery → afferent arterioles • blood - passes through the membranes of Bowmann’s capsule: 1. osmosis 2. diffusion • glomerular filtrate consists of: • water • excess salts →Na+ and K+ • glucose • urea

  4. GFR = glomerular filtration rate ↓ 125 ml/minute amount of water removed from the blood each day ↓ 180 L/day!!

  5. REABSORPTION movement of substances out of renal tubules back into blood capillaries located around the tubules proximal convoluted tubules →loop of Henle → distal convoluted tubules→ collecting tubules

  6. 3 main substances reabsorbed: 1. WATER = passive reabs. - 178 l/day returns = 99% 2. GLC = actively transported - limitations – DM 3. Na = actively transported - ↓salt intake = ↑ reabsorption = excretion ↓

  7. Secretion • substances move into distal and collecting tubules from blood in the capillaries around these tubules • mechanisms: 1. active transport 2. diffusion • substances: • hydrogen ions (H+) • potassium ions (K+) • ammonia (NH3) • certain drugs

  8. CONCENTRATION OF URINE signal ↓ hypotalamus ↓ ↓ pituitary gland ↓ ADH ↓ water reab. ↓ highly concentrated urine

  9. URINE PATHOLOGY HEMATURIA PYURIA GLYCOSURIA PROTEINURIA

  10. THANK YOU !!!

More Related