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What is joints?
Any point where bone meet, moveable or not. Type-classified by the manner in which adjacent bones are bound to each other.
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What is Arthrology?
The science of joint structure, function, and dysfunction
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What is Synostosis (Bony Joint)?
Joint formed when the space bw two bones or more bones ossify to becomes a single immoveable bone.
Example: frontal and mandibular bones, growth plates of long bones, first rib + sternum
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What is Synarthrosis (Fibrous Joint)?
Neighboring bones are bound together by collagen fibers (fibers emerge from one, penetrate into another)
IE: Sutures, Gomphoses, Syndemoses
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What is Sutures?
Immoveable or only slightly moveable joints binding bones of the skull.
- Three Types:
- Serrate, Lap (squamous), Plane (butt)
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What is Gomphoses?
Teeth attached to jaw bone and allows for some minor movement.
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What is Syndesmoses?
- Longer collagen fibers;
- Allow for greater motility of bones
- Distal ends of Fibula and Tibia
- Bwn shafts of Radius and Ulna
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What is Amphiarthrosis (Cartilaginous Joint)?
Two bones are linked together by cartilage.
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What is Synchondroses?
Bones are bound together by hyaline cartilage.
Growth plates
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What is Symphyses?
Bones are bound by fibrocartilage.
Pubic Symphysis - Bwn bodies of vertebrae
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What is Synovial Joints?
- Consists of two bones with facing surfaces covered by articular (hyaline) cartilage, separated by a joint cavity containing synovial fluid. Fluid is enclosed by a joint capsule. All is surrounded by inner synovial membrane and outer fibrous capsule.
- In some, fibrocartilage grows inward across the entire joint and forms a pad bwn the bones (articular disk).
- In some, this growth does not cross the entire joint (meniscus).
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What is Snyovial Fluid?
- -Albumin and Hyaluronic Acid (HLA)
- -Nourishes articular cartilage, removes waste, and reduces fricition within these joints
- -Contained within a bursa or tendon sheath.
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