Animals and plants are made of cells. Tissues are made from cells of a similar type. Organs are made from tissues, and systems are made from several organs working together.
Humans are multicellular. That means we are made of lots of cells, not just one cell. The cells in many multicellular animals and plants are specialised, so that they can share out the processes of life. They work together like a team to support the different processes in an organism.
The diagrams show examples of some specialised animal cells. Notice that they look very different from one another.
The tables show examples of some specialised animal and plant cells, with their functions and special features: