Structure And Function
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Summary
Human Excretory Renal System mind map summary
1. Main Function
The excretory system removes waste substances from the body.
The kidneys filter the blood.
Urea is removed from the blood.
Urea leaves the body in urine.
2. Kidneys
There are two kidneys.
They are bean-shaped organs.
They are found near the back of the body.
Their main job is to filter blood.
3. Blood Vessels
Blood carrying waste enters the kidneys.
The kidneys remove urea from the blood.
Cleaned blood leaves the kidneys and returns to the body.
4. Urea
Urea is a waste substance.
It is made when the body breaks down excess proteins.
Urea must be removed because it can be harmful if it builds up.
5. Urine
Urine contains urea and excess water.
Urine is made in the kidneys.
Urine carries waste substances out of the body.
6. Tubes and Storage
Ureters carry urine from the kidneys to the bladder.
The bladder stores urine for a short time.
The urethra carries urine out of the body.
7. Simple Pathway Show this as a clear flow branch:
Blood with urea → Kidneys filter blood → Urea removed → Urine formed → Ureters → Bladder → Urethra → Out of body
Human Excretory System
Structure And Function
Water And Mineral Salt Transport Mind Map
Structure And Function