Organsing the Organism
- Created by: Eleanor Izzard
- Created on: 08-01-13 11:59
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- Organising the Organism
- Transport Tissues
- Xylem and Phloem come from Meristem cells (cambium) that undergo differentiation
- Phloem - sieve tubes and companion cells
- meristem tissue produces cells that elongate and line up to form a long tube
- Xylem - xylem vessels with parenchyma cells and fibres
- meristem cells produce cells that elongate, their walls become reinforced with lignin
- Tissues in Animals
- Muscle - specialised to contract and move parts of the body
- Nervous - can convert stimuli into electrical impulses and conduct those impulses
- Connective - hold structures together and provide support
- cartilage, bone, blood
- Epithelial - layers and linings
- Squamous - flattened cells, very thin forming a long thin smooth flat surface
- held together by basement membrane (secreted by epithlial cells) made of collagen and glycoproteins, attaches epithelial cells to connective tissues
- Ciliated - column shaped cells
- some cells secrete mucus and others are covered in tiny hair like projections (cilia) that waft the mucus
- Squamous - flattened cells, very thin forming a long thin smooth flat surface
- Locomotion
- muscular and skeletal systems work together for movement to take place, if the nervous system tells the muscles to co ordinate their actions
- requires energy and therefore a supply of nutrients and oxygen from the circulatory system and digestive/ ventilation systems
- muscular and skeletal systems work together for movement to take place, if the nervous system tells the muscles to co ordinate their actions
- Transport Tissues
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