Role of the excretory system
Integrated Science · Grade 7 · about 40 minutes
Excretion is the removal of wastes the body has made. The Grade 7 excretory system uses the skin, lungs and kidneys. Faeces are a different story.
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- 7 sections of explanation, worked examples and diagrams
- 1 practice task with hints and worked answers
- A quiz that marks itself as you go
- Your progress kept across every subject you take
Other lessons in this sub-strand
- Role of the excretory system
- Organs of excretion: skin, lungs, kidneys
- Wastes from skin, lungs and kidneys
- Observing the skin with a hand lens
- Epidermis and dermis
- Sweat gland, duct, pore and hair
- Functions of parts of the skin
- Lungs remove carbon IV oxide
- Parts of the urinary system
- External appearance of the kidney
- Ureter, bladder and urethra
- Functions of the urinary system
- Modelling the urinary system
- Common kidney disorders
- Causes of kidney disorders
- Preventing kidney disorders
- Healthy lifestyle for skin and kidneys
- Daily log of skin and kidney health