Cell Organisations
- Created by: sxdewinder`
- Created on: 10-05-15 16:29
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- Cell Organisation
- Large multicellular organisms are made up of organ systems
- The process by which cells become specialised for a particular job is called differentiation
- Differentiation occurs during the development of a multicellular organism
- These specialised cells form tissues, which form organs, which form organ systems
- Similar Cells are organised into tissues
- A tissue is a group of similar cells that work together to carry out a particular function
- Examples of tissues include
- 1)Muscular tissue, which contracts to move whatever its attached to
- 2)Glandular tissues, which makes and secretes chemicals like enzymes and hormones
- 3)Epithelial tissue, which covers some parts of the body (eg, inside of the gut)
- Tissues are organised into organs
- An organ is a group of different tissues that work together to perform a certain function
- For example, the stomach is an organ made up of these tissues
- 1)Muscular tissue, which moves the stomach wall to churn up the food
- 2) Glandular tissue, which makes digestive juices to digest food
- 3)Epithelial tissue, which covers the outside and inside of the stomach
- Organs are organised into organ systems
- An organ system is a group of organs working together to perform a particular function.
- For example the digestive system breaks down food and is made up off these organs
- 1)Glands which produce digestive juices
- 2)The stomach and small intestine, which digests food
- 3)The liver, which produces bile
- 4)The small intestine, which absorbs water soluble food molecules
- 5) The large intestine which absorbs water from undigested food, leaving faeces
- For example the digestive system breaks down food and is made up off these organs
- An organ system is a group of organs working together to perform a particular function.
- Large multicellular organisms are made up of organ systems
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