Studied by 17 peopleWhat is excretion?
removal of metabolic wastes
What is osmoregulation and why is it necessary?
It controls the water content of blood and how much is urinated. If this goes wrong cells can lyse (pop) or shrivel up.
what is excreted in the excretory system
CO2, Water, Urea, Ammonia, and Salts (Minerals)
organs of the excretory system
Lungs, Liver, Sweat Glands, and kidneys
Where is osmoregulation?
The medula of the kidney
What is filtered to make urine?
Blood is filtered
filtering unit of the kidneys?
The nephron is the tiny filtering unit
Bowmans Capsule
Double walled cup structure
Glomerus
cluster of blood capillaries
What does the glomerus do?
It filters blood
proximal convoluted tubule
most reabsorption and secretion
Loop of Henle
(in medulla) tubule empties filtrate into a collecting duct, water reabsorption
Distal Convoluted Tubule
Filtrate fine tuning
Collecting Duct
Final water reabsorption - controlled by ADH
What hormone controls the collecting duct?
ADH
Where is ADH from?
The pituitary gland
What does the kidney do?
produces urine
What do the ureters do?
Transports urine from kidneys to bladder
What does the bladder do?
Stores urine
Urethra
passes urine to outside
Kidney Stones cause
severe dehydration which causes buildup of minerals
Cirrhosis cause
excessive intake of alcohol
Cirrhosis effects
loss of liver cell function
Bladder Infection
infection of the urinary tract which causes a burning sensation when peeing
Dialysis
artificial filtration of blood
Distal Convoluted Tubule
Collecting Duct
Loop of Henle
Glomerus
Bowmans Capsule
Proximal Convoluted Tubule
Note 
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