Excretory System Flashcards
Give three functions of the excretory system
Filters the blood to remove waste products
Prevents toxicity
Maintains constant environment
What is the excretory system in mammals made up of
Ureters
Bladder
Urethra
In mammals, what is the ureter
Two tubes which carry urine from the kidney to the bladder
In mammals, where is urine stored
Bladder
In mammals, what happens in the urethra
Allows the passing of urine from the bladder out of the body
In birds, what is the excretory system made up of
Ureters
Cloaca
What is the ureter in birds
Two tubes which carry urine from the kidneys to the cloaca
What happens in the cloaca in birds
Allows urine and waste products to be cleared from the body
What does the excretory system removes
Nitrogenous waste products such as ammonia, salt and water
Where do nitrogenous waste products come from
Breakdown of proteins
In mammals, how is ammonia removed
Urea
In mammals, what is required to be secreted as urine
Water
In birds, how is ammonia removed
In the form of uric acid
In birds, what does not need to be required to remove ammonia in the form of uric acid
Does not require water and is an insoluble substance
What is the excretory system
Made up of the kidneys, bladder, ureters and urethra
