What is the largest internal organ in the human body?
AnswerThe liver
The liver is the largest internal organ and processes many substances carried by the blood.
Health · Facts & stats
Detox facts & stats
7 fact-checked facts about how the body clears waste, each with the reason behind it. 5 more are in today's round and join this page after it closes.
The basics
Which waste gas do humans breathe out?
AnswerCarbon dioxide
Cells produce carbon dioxide as a waste product, and the lungs breathe it out.
Going deeper
The liver makes bile, which helps the body digest what?
AnswerFats
Bile breaks fats into tiny droplets so digestive enzymes can work on them.
What is the main job of sweating?
AnswerCooling the body as sweat evaporates
Sweat is mostly water that cools the skin as it evaporates; the kidneys and liver handle most waste.
What is unusual about the liver compared with most organs?
AnswerIt can regrow lost tissue
The liver can regenerate, regrowing to near its full size after part of it is removed.
Expert level
In which organ is urea mostly produced?
AnswerThe liver
The liver makes urea through the urea cycle; the kidneys then filter it out of the blood.
What is the tiny cluster of capillaries where kidney filtration begins called?
AnswerThe glomerulus
Blood is filtered in the glomerulus, a ball of capillaries at the start of each nephron.
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