Chapter 13 Flashcards
Excretion & homeostasis (14 cards)
What does excretion mean?
getting rid of waste products
in mammals,where is carbon dioxide excreted from?
the lungs
How does plants excrete carbon dioxide?
through their stomata
What is a urea?
a waste product produced in the liver
How is urea removed from the blood?
by the kidneys
What does the kidneys also do?
remove excess water & ions from the blood
What is urine?
a solution of urea & other waste materials in water
What is a ureter?
pair of tubes that carries urine from the kidneys»_space; bladder
What is a urethra?
the tube that carries urine from the bladder to the outside
what does internal enviroment mean?
conditions inside the body
what does homeostasis mean?
the maintenance of a constant internal enviroment
what does homeostasis do?
helps keeping a constant temp
helps keep a constant concentration of glucose
what is insulin?
decreases blood glucose concentration
