specialised animal cells

• sperm cells are specialised for reproduction. It has a long tail to help it swim to the egg. There are a lot of mitochondria in a cell to provide it with the energy needed.
• nerve cells are specialised for rapid signalling. the function of nerve cells is to carry electrical signals from one part of the body to another. These cells are long (to cover more distance) and have branched connections at their ends to connect to other nerve cells
• muscle cells are specialised for contraction. the function of a muscle cell is to contract quickly. these cells are long so they have more space to contract and contain lots of mitochondria to generate energy needed for contraction
• dendrites increase the surface area so that the nerve cells can connect more easily