The body contains many different types of cells that are specially adapted to their functions. Nerve cells are long to conduct electrical signals over long distances. Red blood cells contain hemoglobin and lack a nucleus to efficiently carry oxygen throughout the body. Guard cells in plant leaves have specialized structures that allow them to control gas exchange.

1. Special cells

3. Special animal cells 1 These are the longest cells in the body. Nerve cells There are many types of cell in the body. They are each designed to do different jobs. White blood cells These large cells attack bacteria, etc.

4. Nerve Cell

5. White Blood Cell

6. Special animal cells 2 Sperm cells These have a tail and are streamlined to help them to swim. Egg cells These are very large cells so they can carry a lot of food. Red blood cells These contain haemoglobin to help them carry oxygen. They have no nucleus.

7. Sperm meets Egg

8. Red Blood Cells

9. Special animal cells 3 Gut cells These cells have many folds in the cell membrane to increase the surface area. Trachea cells These cells have tiny hairs (cillia) on their surface which wave, filtering dust and moving mucus. Muscle cells These cells can contract or shorten.

10. Epithelial Cells

11. Muscle Cells (Heart)

12. Special plant cells 1 Root hair cells These cells have tiny hairs that help to collect water. Palisade cells These cells have a large surface area for efficient gas exchange. They have lots of chloroplasts to help make sugars.

14. Special plant cells 2 Guard cells These cells are mainly found on the lower surface of a leaf. They allow gases to enter and leave the cell. Xylem vessels These are dead cells. They form long thin tubes which carry water up the stem.

15. Plant Cells