The Kidney

• What is the function of the kidneys?

  • Filtration
  • Selective reabsorption
  • Excretion
• What do the kidneys do during the filtering of blood?

  Reabsorbs all of the glucose and any mineral ions and water the body needs
• What controls the amount of water the kidney reabsorbs?

  Antidiuretic hormone (ADH) from the pituitary gland
• Kidney Structure:

  A) Cortex

  B) Medulla

  C) Pelvis

  D) Renal Artery

  E) Renal vein

  F) Ureter

  
• Urinary System:

  A) Kidney

  B) Ureter

  C) Bladder

  D) Urethra

  
• Where and what process makes urea?

  Liver and Deamination
• What does the kidneys secrete in excess?

  Water and salts
• What does the hormone ADH control?

  The amount of water reabsorbed by the kidneys
• How does the kidneys maintain the water balance of the body?

  By selectively reabsorbing the amount of water the body needs. It excretes any excess into urine.
• When is ADH released and what does it do?

  • ADH levels increase when the blood is too concentrated
  • It makes the kidney tubules more permeable to reabsorb more water