cell organisation

• specialised cells form tissues, which form organs, which form organ systems
• a tissue is a group of similar cells that work together to carry out a particular function
• muscular tissue - contracts to move whatever it is attached to
• glandular tissue - which makes and secretes chemicals and enzymes and hormones
• epithelial tissue - covers some parts of the body
• muscular tissue in the stomach - moves the stomach wall to churn up the food
• glandular tissue in the stomach - makes the digestive juices to digest food
• epithelial tissue in the stomach - covers the outside and inside of the stomach
• an organ is a group of different tissues that work together to perform a certain function
• glands - produce digestive juices
• stomach and small intestine - digest food
• liver - produces bile
• small intestine - absorbs soluble food molecules
• large intestine - absorbs water from undigested food, leaving faeces