Chapter 12 - The Musculoskeletal System (Skeleton)

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Year 11 ATAR Human Biology Chapter 12 - The Musculoskeletal System (Skeleton)
Zita Wormuth
Fichas por Zita Wormuth, actualizado hace más de 1 año
Zita Wormuth
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What is the function of the skeleton? 1. Provides framwork 2. Allow us to move
What is articulation? Where bones meet in such a way that they are able to move relative to one another
Describe the structure of a bone
Describe the microscopic structure of a bone
What is cartilage? Like bone, it is also connective tissue & contains fibres made of collagen. These fibres are embedded in a complex called chondrin
What are the 3 types of cartilage? 1. Hyaline 2. Elastic 3. Fibrocartilage
There are 2 sets of bones in the skeleton, what are they? Axial and Appendicular skeleton
Where on the body do these parts lie?
What is a joint? The site at which two or more bones come together
What are the 3 types of joints? 1. Fibrous/Fixed/Immovalbe 2. Cartilaginous/Slightly moveable 3. Synovial/Freely movable
What are the 6 types of synovial joints? 1. Ball & Socket 2. Pivot 3. Hinge 4. Gliding/Plane 5. Saddle 6. Condyloid
Describe the structure of a synovial joint
What is flexion? Bending, which decreases the angle between articulating bones
What is extension? Straightening, increases the angle between articulating bones
What is abduction? Movement away from the midle of the body
What is adduction? Movement towards the midline of the body
What is rotation? The movement of a bone along its axis e.g. rotation of the humerus
What is osteoporosis? The loss of bone mass which impairs normal functioning. Calcium, vitamin D and excerise all prevent and treat the illness
What is osteoarthritis? The gradual change in the joints over time. Bone cartilage deteriorates so bones have little protection. No known cure but medication, physiotherapy or surgery is used as treatment
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