Homeostasis Flashcards
1
Q
What is it
A
The maintenance of a constant environment in the body
2
Q
What does it control
A
Gas levels
Water levels
Body temperature
3
Q
How does it control gases
A
Oxygen and Carno dioxide levels are controlled by lungs
Oxygen bought into lungs from air passing into blood
Carbon dioxide passes bloodstream into air
4
Q
How does it control water levels
A
Controlled by kidneys
Closely linked to urea excretion
Urea is waste made when liver breaks down protein
Urea contains nitrogen
5
Q
How does it control body temperature
A
When your body is hot you sweat releasing heat
6
Q
Why is it important for body to maintain temperature
A
Body is at risk of hypothermia or overheating
