Question

Which one is an accessory excretory organ?
A. Liver
B. Stomach
C. Intestine
D. Heart

Answer 1

Hint: A very important function of liver along with being one of the largest human organs is the excretion by producing urea.

Complete answer:
Accessory organs are the organs which do not form part of a particular system but still take part in the activities and the functioning of that particular system. Liver is considered as an accessory excretory organ. Liver is not a part of the excretory system of humans but it plays a role in excretion.
The organs which actually form part of the excretory system are Kidneys, ureter, urinary bladder, urethra. Liver is the organ which forms compounds that can be used by human beings from excessive amino acids ( by the process of conversion). The human usable compounds include urea. Liver secretes bile juices and also takes part in the breakdown of various compounds in the bloodstream. Liver is the organ which changes toxic Ammonia, which is released by The breakdown of proteins, into urea.
This whole process occurs in the blood. This blood containing urea then moves to the Kidneys where it is purified and filtered. As a result of Kidneys action, this urea is excreted from the body full stop besides the conversion of toxic Ammonia, liver also takes part in the transformation of other harmful substances like cholesterol into less toxic ones. Liver despite being an accessory excretory organ coma also produces bile uses, some proteins, cholesterol. Liver also takes part in the activation of enzymes.

The correct answer is (A).

Note: The human body poses many accessory organs other than the liver. These accessory organs include skin, lungs,etc.