homeostasis Flashcards
What is homeostasis?
The maintenance of a constant internal environment
What is negative feedback?
A change that is counteracted
How can water be gained?
Food and drink respiration
How can water be lost?
Sweating breathing faeces and urine
What are the kidneys two main jobs?
Keep a balance of other chemicals in the blood-including water and removing waste like urea
How does alcohol affect ADH production?
Alcohol suppresses (stops) the amount of ADH production. So there will be a large amount of more dilute urine than normal being produced.
How is this a danger?
If loads of water is being passed out as urine then it can lead to dehydration.
How does ecstasy affect ADH production?
Ecstasy increases the amount of ADH produced.
How is this a danger?
It can cause cells to burst and you can die of water intoxication
Will your urine be dilute or concentrated when more ADH is secreted?
Concentrated because you are causing the kidneys to absorb more water.
What chemical is ADH?
A hormone
Where is ADH secreted from?
Pituitary gland
