Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

Excretory system


Published on

A CAPS-aligned overview of the excretory system for grade 9's.

Published in: Education
  • Be the first to comment

Excretory system

  1. 1. Excretory system
  2. 2. Most important processes Filtration Absorption Distribution Excretion
  3. 3. Urinarysystem Kidneys Aorta and renal artery Vena cava inferior and renal vein Urine tube - Ureter Bladder Urethra
  4. 4. Bean shaped Approximately the size of a fist, and protected by a fatty layer. Situated in the abdominal cavity, under the diaphragm, either side of the spine. Right is slightly lower than left.
  5. 5. Functionofkidneys Excrete waste products Regulate water in the blood and tissue fluid. Regulate acid and mineral salts to ensure the body does not have a surplus.
  6. 6. Filtration Re-absorption Formation of Urine Blood is filtered and waste products (urea) are removed from the blood. Water, salts and other substances are re- absorbed. The water that is not re-absorbed, keeps the waste products in solution to be excreted later. Blood is filtered and waste products (urea) are removed from the blood.
  7. 7. Ureter • The two tubes that transport urine from the kidneys to the bladder Bladder • The bladder stores urine before it is excreted after a period of time. Urethra • Transports urine from the bladder out of the body.
  8. 8. Title slide: Slide 3: Slide 4: Slide 6: Nephron: NgaamLymga2jRKGe57lsWNlnhd-zGresPWBt Glomeruli: https://encrypted- Urinalysis: Slide 7: content/uploads/2015/06/princ_rm_photo_of_urinary_tract_infection-300x335.jpg TEXT: du Plessis et al: DocScientia Textbook and Workbook Grade 9 Natural Sciences CAPS; 2013