Post on 02-Jan-2016
Do birds pee?
Investment of energy in producing nitrogeneous waste!
Fish--little investment--Ammonia
Mammals--some investment for storage in bladder--Urea
Birds--produce uric acid which can be stored as solid waste!!
Why are you thirsty?• Blood osmolarity is greater
than the set point!• The extra solute in your
blood interacts with receptors in your brain.
• The hormone ADH (Anti-diuretic hormone) works to correct this!
Does caffiene make you pee more?
• Caffiene is a weak inhibitor of ADH.
• What would that do?
• Does coffee/Coca-Cola quench your thirst?
Can you die from drinking too much (water)?
• Yes!• Hyponatremia • What is out of balance?• What organs are affected