Cell Organisation
- Created by: Maddie A-P
- Created on: 09-05-15 17:40
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- Cell Organisation
- The process by which cells become specialised for a particular job is called differentiation.
- Specialised cells form tissues, which form organs, which form organ systems.
- e.g. Epithelial cells are organised into epithelial tissue, which forms the stomach, which forms part of the digestive system.
- Similar cells are organised into tissues
- A tissue is a group of similar cells that work together to carry out a particular function.
- Muscular tissue contracts to move whatever it's attached to.
- Glandular tissue makes and secretes chemicals like enzymes and hormones.
- Epithelial tissue covers some parts of the body.
- Tissues are Organised into Organs
- An organ is a group of different tissues that work together to perform a certain function.
- Muscular tissue moves the stomach wall to churn up the food.
- Glandular tissue make digestive juices to digest food.
- Epithelial tissue 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.
- The Digestive System
- Glands (Pancreas and salivary glands) produce digestive juices.
- The stomach and small intestines digest food.
- The liver produces bile.
- The small intestine absorbs soluble food molecules.
- The large intestine absorbs water from undigested food, leaving faeces.
- The digestive system takes in nutrients and releases substances.
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