Biology · Class 10

Human Excretory System

The excretory system removes metabolic waste products from the body. It includes the kidneys, ureters, bladder, and urethra. Maintaining proper excret

syllab.in · free

❓ Quick answer

What is the normal color and composition of urine?

Normal urine is pale yellow due to the presence of urobilin, a breakdown product of hemoglobin. It contains about 95 percent water, 5 percent urea and other dissolved substances. Darkening indicates dehydration. Presence of glucose, blood, or excess protein indicates a problem.

❓ Quick answer

Why do you urinate more after drinking alcohol?

Alcohol suppresses the production of ADH. Without sufficient ADH, the kidneys reabsorb less water, producing more dilute and larger volumes of urine. This leads to dehydration.

❓ Quick answer

What is dialysis and when is it needed?

Dialysis is an artificial process that removes waste products and excess water from blood when kidneys fail. It mimics the kidney's filtration function. Dialysis is needed when kidney function drops below 10-15 percent of normal, usually due to chronic or acute kidney disease.

Learn it fully — free

Read the full Human Excretory System explainer on Syllab

syllab.in

Open the full explainer