Name: Common Disorders of the Urinary System
Uploaded: 2019-07-19
Duration: 2 min 25 s
Description: The most prevalent issues tend to be infections of the urinary tract, which include kidney stones and kidney disease. Anuria refers to reduced urine output.

Question

Describe the role of liver, lungs, and skin in excretion.

Accepted Answer

Excretion is a physiological process in which metabolic wastes are eliminated out of the body. Except kidneys which are vital excretory organs, other organs in the body also carry out the process of excretion, these are liver, lung, skin, etc.

Excretion by Lungs: Elimination of a large amount of carbon dioxide (200ml per minute) in the process of exhalation takes place through the lungs everyday.

Excretion by the liver: Liver is the main organ for detoxification. Liver produces excretory wastes in the form of bilirubin, biliverdin and these are excreted out from the body along with the fecal matter.

Excretion by the skin: Sweat and sebum are major excretory products eliminated through the skin.
Sweat is a watery fluid that contains water, salt, lactic acid and a small amount of urea. It is produced by sweat glands and is eliminated through the skin.
Sebum contains substances such as sterols, hydrocarbons and waxes. It is produced by the sebaceous gland and is eliminated through the skin.

Column I	Column II
a) Ammonotelism	(i) Birds
b) Bowman's capsule	(ii) Water reabsorption
c) Micturition	(iii) Bony fish
d) Uricotelism	(iv) Urinary bladder
e) ADH	(v) Renal tubule

Describe the role of liver, lungs, and skin in excretion.

Important Questions on Excretory Products and Their Elimination

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