2i Excretion Flashcards
1
Q
What is excretion?
A
Removal of waste (often toxic) substances that have been produced from chemical reactions inside the body, such as carbon dioxide and urea in animals - metabolic reactions
2
Q
What is egestion?
A
The removal of undigested material from the body (faeces) through the anus
3
Q
What is metabolic reactions?
A
Getting rid of the waste products produced by the body’s metabolic reactions
4
Q
What do animals excrete?
A
Carbon Dioxide - Product in respiration removed by the lungs
Urea - produced from excess amino acids broken down in the liver. It is removed by the kidneys
Sweat - removed through the skin
5
Q
What are the two stages of creating urine?
A
Stage 1 - Ultrafiltration - filtering all small
