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ORCHIDS The International School

Healthy Habits Related to Excretion

1) What is Dialysis?

  • Dialysis is an artificial method to purify blood in case of kidney failure.
  • It is done using an artificial machine which functions like a kidney.
  • The frequency of the dialysis depends on an individual's age, diet and medical condition.

2) Name the Blood Vessels Which Carry Blood to the Kidneys.

  • Renal veins and arteries carry blood to the kidneys.
  • The renal artery carries the unfiltered blood from body parts to the kidneys for filtration.
  • The blood, once filtered, is sent back to the body parts with the help of the renal vein.

3) How Does the Weakening of Bones Be Related to Kidney Diseases?

  • Kidneys play a vital role in keeping the level of phosphorus balanced in our bodies.
  • A balanced phosphorus level is necessary for balancing Vitamin D in our body. Vitamin D is essential for the absorption of calcium in the body.
  • An increase in phosphorus levels does not allow calcium to get absorbed into the body, leading to weakening bones.

4) Explain How Kidney Stones Are Formed.

  • An increase in the concentration of uric acid and calcium salts in the blood may lead to the formation of kidney stones.
  • This is because the kidney cannot filter these substances efficiently when their level increases, and they start depositing inside the kidneys in the form of kidney stones.

5) How Is the Flow of Urine From the Urinary Bladder Regulated?

  • The sphincter muscles regulate the flow of urine from the urinary bladder.
  • They contract to allow the urine to pass to the urethra and relax to allow the urinary bladder to hold the urine.
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