Exoskeleton
- Exoskeleton is hard outer covering of arthropods made up of mainly chitin.
- Which is secreted by epidermal cells and hardens on secretion.
- It is strengthened by addition of other substances e.g. tannins and proteins to become hard and rigid.
- On the joints such as those in the legs the exoskeleton is thin and flexible to allow for movement.
Functions of Exoskeleton
- Provide support.
- Attachment of muscles for movement.
- Protection of delicate organs and tissues.
- Prevention of water loss.