biology

Nerve cell: to carry nerve impulses to different part of the body 

• very thin, and long connections at each end
• can carry electrical signals- impulses

Red Blood cells: Carries oxygen around the body 

• doughnut shaped to allow maximum absorbtion by the haemoglobin they carry 
• also this shape allows smooth passage through the capillaries
• so packed with haemoglobin there is no space for a nucleus
• large surface area for oxygen to pass through

Egg cell:

• specialised for reproduction 
• huge food reserves to provide nutrition for a potential embryo to develop from

Sperm cell: Reproduction cell

• long tail to give sperm it's mobility
• short life span- only strongest sperm can reach the egg

White Blood cells: fight disease

• produces antibodies to fight disease
• irregular shape to engulf bacteria

Epithelial Cell: Stop lung damage

• tiny hairs to filter the air/ for movement to trap dust
• produce mucus to trap dust

Root hair cell:

• long cell increases surface area to help absorbtion of water and minerals
• very thin cell wall for minerals to be absorbed easier