Tissues, Organs and Organ Systems

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GCSE Biology (Additional GCSE) Mind Map on Tissues, Organs and Organ Systems, created by seth.bragg on 04/24/2014.
seth.bragg
Mind Map by seth.bragg, updated more than 1 year ago
seth.bragg
Created by seth.bragg almost 11 years ago
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Resource summary

Tissues, Organs and Organ Systems
  1. Organs in Animals
    1. Tissues
      1. Cells differentiate so that they can carry out different functions; differentiation is the process by which cells become specialised
        1. A tissue is a group of similar cells that work together to carry put a particular function
          1. There are three different types of tissue
            1. Muscular; contracts to produce movement
              1. Glandular tissue; produces substances such as enzymes and hormones
                1. Epithelial tissue; covers some parts of the body
          2. Organs
            1. Organs are made up of tissues
              1. An organ could contain several different types of tissue for example the stomach
                1. Muscular tissues in the stomach churns the food and other contents of the stomach
                  1. Glandular tissues in the stomach produces digestive juices including acid and enzymes
                    1. Epithelial tissue in the stomach to cove the inner and outer surfaces of the stomach
                2. Organ systems
                  1. Organ systems are groups of organs that carry out a particular function
                    1. In the body these include: the nervous system, the respiratory system, the reproductive system and the digestive system
                      1. The digestive system, for example, is made up of the following organs:
                        1. Pancreas and salivary glands; to produce digestive juices
                          1. Stomach; to digest food
                            1. Liver; to produce bile
                              1. Small intestine; to digest and absorb food
                                1. Large intestine; to absorb water from undigested food and produce faeces
                        2. Organs in plants
                          1. Tissues
                            1. There are three types of tissue in a plant
                              1. Epidermal tissue; covers the plant
                                1. Mesophyll; carries out photosynthesis
                                  1. Xylem and Phloem; transport of substances around the plant (like veins)
                                2. Organs
                                  1. Examples of organs in plants include:
                                    1. Roots
                                      1. Stems
                                        1. Leaves
                                          1. Leaves are adapted to absorb sunlight for photosynthesis in the following ways
                                            1. Chlorophyll; to absorb sunlight
                                              1. Large surface area; to absorb more light
                                                1. Stomata; to let carbon dioxide diffuse into the leaf
                                                  1. Thin; short distance for carbon dioxide to diffuse into the leaves
                                                    1. Network of veins; To support the leaf and transport water and carbohydrates
                                              2. The leaf
                                                1. The internal structure of a leaf allows efficient photosynthesis
                                                  1. Thin, waxy cuticle; protects leaf without blocking out light
                                                    1. Thin, transparent epidermis; allows more light to reach the palisade cells
                                                      1. Layer of palisade cells at the top; to absorb light
                                                        1. Many chlorplasts in the palisade cells; increases absorption of light
                                                          1. Spongy mesophyll, air spaces in the leaf allow carbon dioxide to diffuse through the leaf and increase surface area
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