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Science
Science(Excretion)
Question | Answer |
---|---|
What is excretion? | The removal from the body of waste products made in the body |
What the organs of excretion? | Lungs,kidneys and the skin |
What do the lungs excrete? | Carbon dioxide and water vapour |
What do the kidneys excrete? | Water,salts and urea |
What does the skin excrete? | Water and salts |
What is the function of the urinary system? | To make and excrete urine |
What are the parts of the urinary system? | Renal arteries, kidneys, renal veins,ureters,bladder and urethra |
What is the function of the renal arteries? | Carry blood to the kidneys, the blood in the renal arteries contains excess water salts and urea |
What is the function of the kidneys? | Remove excess water,salts and urea from the blood. These compounds combined form urine |
What is the function of the renal veins? | Take the blood(with waste material) from the kidneys and carry it to the heart |
What is the function of the ureters? | Tubes that carry urine from the kidneys to the bladder |
What is the function of the bladder? | Stores urine until it is ready to be released |
What is the function of the urethra? | The tube that takes the urine from the bladder and passes it out of the body |