NEET BIOLOGY

Detailed explanation-1: -Kidneys help in the elimination of wastes from the body in the form of urine. Kidneys are the main organs of excretion in humans. Apart from kidneys, other organs like lungs, liver, skin and sebaceous glands also help in excretion.

Detailed explanation-2: -Organs of excretion include the skin, liver, large intestine, lungs, and kidneys. All of them excrete wastes, and together they make up the excretory system . The skin plays a role in excretion through the production of sweat by sweat glands.

Detailed explanation-3: -The skin also acts as an excretory organ. It is estimated that 3 to 4 million eccrine sweat glands which together roughly weigh the same as one kidney (i.e., 100 g) are distributed over almost the entire human body surface.

Detailed explanation-4: -The skin releases sweat through sweat glands present in the body. The sweat evaporates and helps to keep the body cool when it is warm outside. Skin assists in the process of excretion through sweating by eliminating water, salts and urea.

Detailed explanation-5: -The main excretory organs include kidney, ureter, urinary bladder and urethra. Kidneys filter the blood and urine is the filtrate obtained. Urine passes to the urinary bladder via ureter and is expelled out of the body.