B5 - Skeletons and Joints quation cards on the topic of joints and bones in gcse biology - ocr gateway b5. 4.0 / 5 based on 1 rating ? BiologyGCSEOCR Created by: hotpotato12Created on: 10-01-13 18:17 What is the difference between an endo and exo skeleton? an endoskeleton is inside the body whereas an exoskeleton is on the outside 1 of 13 What is a hydrostatic skeleton a fluid filled cavity 2 of 13 What has a calcium carbonate exoskeleton? Mollusc 3 of 13 Give the main steps of how bones grow. form in womb (entirely cartilage) - periosteum formes - ossification (cartilage to bone) - growth plates form - new cartilage ossified - continues 4 of 13 Is bone continually broken down and replaced? yes - because this is how we fix broken bones 5 of 13 What happens in a simple (closed) fracture? the bone is cracked but the skin is not broken. 6 of 13 What is a greenstick fracture? Bone caracked on one side and bent on the other. 7 of 13 What condition causes holes in bones? Osteoporosis 8 of 13 Why are cartilage and bone susceptible to infection? they are living tissue 9 of 13 What is the difference between a tendon and a ligament? ligament - bone to bone (strong + flexible)......tendon - muscle to bone (not elastic) 10 of 13 Give an example of a synovial joint. knee or shoulder 11 of 13 What are the advantages of having joints replaced? - reduces pain (bone on bone) - improves mobility - alignment of deformed joints 12 of 13 What are the disadvantages of joint replacement? - surgery (infection) - recovery time - dislocation - react to metal (inflammation) - not a permanent solutuion 13 of 13
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