Animal cells can form tissues, tissues can form into organs and organs form into organ systems.
Tissues
Animal cells and plant cells can form tissues, like muscle tissue. A living tissue is made from a group of cells with a similar structure and function, which all work together to do a particular job. Here are some examples of tissues:
- Muscle
- The lining of the intestine
- The lining of the lungs
- Phloem (tubes that carry dissolved sugar around a plant)
- Root hair tissue (for plants to take up water and minerals from the soil)
Organs
An organ is made from a group of different tissues, which all work together to do a particular job. Here are some examples of organs:
- Heart
- Lung
- Stomach
- Brain
- Leaf
- Root
Organ systems
www.bbc.co.uk/bitesize/topics/znyycdm
An organ system is made from a group of different organs, which all work together to do a particular job. Here are some examples of organ systems:
- Circulatory system
- Respiratory system
- Digestive system
- Nervous system
- Reproductive system
- Leaf canopy
- www.twig-world.com/films/parts-of-the-plant-flowers-1182/
- www.twig-world.com/films/sexual-reproduction-in-plants-1191/
- www.twig-world.com/films/asexual-reproduction-in-plants-1204/
- www.twig-world.com/films/placenta-937/
- www.twig-world.com/films/egg-930/
- www.twig-world.com/films/sperm-929/
- www.twig-world.com/films/glossary/amniotic-fluid-238
www.twig-world.com/films/birth-936/ (optional)