ANIMAL CELLS SPECIALISATION

• • Most animal cells are specialised
  • They have adaptions which help them carry out their function
  • When cells become specialised scientists call this differentiation
• Sperm cell - join with egg cell (fertilisation), during fertilisation sperm and egg cell combine genetic information


  Sperm cells have long tails which help them when swimming to the egg cell

  Sperm cells are packed with mitochondria which provide energy needed for swimming

  Sperm cells contain enzymes, allowing them to digest way into outer layer of the egg cell
• Nerve cells - sends electrical impulses around the body


  Axon carries electrical impulses from one part of the body to another

  Myelin insulates axon and speeds up transmission of nerve impulses

  At the end of a axon there is synapses - which allow electrical impulses travel from one nerve cell to another

  Dendrites which increase surface area so the nerve cells can connect more easily
• Muscle cells - can contract (get shorter)


  Muscle cells contain protein fibres which can change their length

  Muscle cells are packed with mitochondria to provide more energy for muscle contraction

  Muscle cells work together to from muscle tissue