Excretion - Excretion is the removal of the metabolic wastes of an organism. Wastes that are removed include carbon dioxide, water, salt, urea and uric acid. All excreted wastes travel at some time in the …

A common mistake is to think that faeces (poo) is excreted by the body. Faeces mainly consists of undigested food and is not waste from metabolism. So it is incorrect to give faeces as an example of …

Egestion should not be confused with excretion because most of the contents of the faeces, apart from the bile pigments, have not taken part in reactions in the cells of the body.

Activity 3. Vocabulary and terms based on excretion Use the word bank to match the term to the definition and fill in the blanks below. Urea Bladder Urethra Ureters Liver

Excretion in Humans 1. Fill in the table below to summarise excretion in humans.

Specifically, the act of excretion is a two-fold function: it eliminates substances that have reached their threshold concentration in the blood, and it retains or reabsorbs substances that are below this …

In human and other complex animals, The organs of excretion are the lungs, kidneys, liver, and skin. These organs work with the circulatory, nervous, and endocrine system to keep the body’s internal …