Biology

Human Excretion and Kidney Physiology

1,152 Questions

Human excretion and kidney physiology questions test your understanding of the excretory system, including the role of renal tubules and glomerular filtration. You will also find topics on urine formation, body water absorption, and excretory products. This section is vital for medical and general science exam preparation.

Glomerular filtrationRenal tubule absorptionExcretory productsRole of sodium ionsHuman excretory system

Human Excretion and Kidney Physiology Questions

Multiple choice

The artificial kidney machine works on the principle of

  1. Dialysis

  2. Electrodialysis

  3. Ultrafiltration

  4. Ultracentrifugation
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The ordinary process of dialysis is slow. To increase the process of purification, the dialysis is carried out by applying electric field. This process is called electrodialysis. The important application of electrodialysis process in the artificial kidney machine used for the purification of blood of the patients whose kidneys have failed to work. The artificial kidney machine works on the principle of electrodialysis.

Multiple choice

The stones formed in human kidney consist mostly of

  1. calcium oxalate

  2. sodium acetate

  3. magnesium sulphate

  4. calcium
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Calcium oxalate is the most common component of kidney stones, forming when there's excess calcium and oxalate in urine. The other options are not major kidney stone components. Sodium acetate and magnesium sulphate are salts, but pure calcium alone doesn't typically form stones.

Multiple choice

Dialysis is used for the treatment of

  1. Heart

  2. Kidneys

  3. Lungs

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Dialysis is a treatment for kidney failure that artificially removes waste products and excess fluid from blood when kidneys can't function properly. It doesn't treat heart, lungs, or other organs. The kidneys are the primary organs that dialysis replaces.