BIOLOGY 7: Tissue Fluid & The Skeletal System 4.5 / 5 based on 2 ratings ? BiologyCells, tissues and organsGCSEOCR Created by: Chloe HanslowCreated on: 21-05-13 20:35 What are capillaries? Really tiny blood vessels 1 of 27 What type of walls do capillaries have? Permeable walls 2 of 27 How do permeable walls affect substances? Substances can diffuse in and out of them 3 of 27 What are networks of capillaries in tissue called? Capillary beds 4 of 27 How is tissue fluid formed? Blood passes through capillary beds and the small molecules that are forced out form the tissue fluid 5 of 27 What small molecules does tissue consist of? Water, glucose and oxygen 6 of 27 How do waste chemicals get from cells to capillaries? The waste chemicals diffuse out of the cells, into the tissue fluid, then into the capillaries 7 of 27 What does the tissue fluid allow cells to do? Get the substances they need and get rid of waste without a capillary supplying every single cell with what it needs 8 of 27 What is the job of a skeleton? To support the body, to allow the body to move, and to protect vital organs 9 of 27 What is a vertebrate? Animals that have an internal skeleton and a backbone 10 of 27 What are bones held together with? Ligaments 11 of 27 What do joints allow bones to do? Move 12 of 27 What properties do ligaments have? They have a high tensile strength and they are highly elastic 13 of 27 How does having a high tensile strength and being slightly elastic help ligaments? They can stabilise joints but still allow movement 14 of 27 What are the ends of bones covered with? Cartilage 15 of 27 Why are the ends of bones covered with cartilage? To reduce friction 16 of 27 Why do some synovial membranes release synovial fluid? To lubricate joints and reduce friction 17 of 27 What do some synovial membranes release? Synovial fluid 18 of 27 How are bones attached to muscles? By tendons 19 of 27 How are bones attached to other bones? By tendons 20 of 27 How do muscles move bones? By contracting 21 of 27 What moves bones? Muscles 22 of 27 Can muscles only push or only pull? Pull 23 of 27 Why do muscles work in antagonistic pairs? Because they can only pull 24 of 27 What type of pairs do muscles work in? Antagonistic pairs 25 of 27 What does it mean when you say muscles work in 'antagonistic pairs'? When one muscle contracts, the joint moves in one direction. When the other muscle contracts, it moves in the opposite direction 26 of 27 In which direction does the other muscle move when one contracts? In the opposite direction 27 of 27
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