Anatomy Arthrology Sec 6
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What is the structural classification of articulations?
- - Presence of a space between bones
- - connective tissue holding bones together
What are the three types of connective tissue for structural classification?
- Collagen fibers
- Articular capsule and Accessory ligaments
How are joints classified in functional classification?
What are the three movement classifications in Functional classification?
- Immovable = synarthrosis
- Slightly moveable = amphiarthrosis
- Freely movable = diarthrosis
What are the features of Fibrous Articulations?
- Lack synovial cavity
- Bones held by fibrous connective tissue
- Little or no movement (synarthroses or amphiarthroses)
- No space between bones
What fibrous articulation has synarthrosis and consists of a thin layer of dense fibrous connective tissue connecting bones?
What are the features of syndesmoses?
- Fibrous joint
- Bones united by ligament
- amphiarthrosis (slightly movable)
What is an example of a syndesmoses joint?
anterior tibiofibular joint and interosseous membrane
What type of joint has a ligament holding cone shaped peg in bony socket?
What are the features of cartilaginous joints?
- Lacks synovial cavity
- allows little or no movement
- bones tightly connected by fibrocartilage or hyline cartilage
What type of cartilaginous joints are connected by hyline cartilage?
- (ex. joint between rib and sternum)
What type of cartilaginous joints are connected by Fibrocartilage?
- (ex. IV disks)
What are the features of a synovial joint?
- Synovial cavity separates articulating bones
- Diarthroses (freely moveable)
- articular cartilage
- articular capsule
- synovial membrane
What is the purpose of articular caartilage?
- Reduce friction
- Absorbs shock
What is the function of the articular capsule?
- Surrounds joint
- Thickenings in fibrous
- Capsule called ligaments
What is the function of the synovial membrane?
- Inner lining of capsule
- secretes synovial fluid
- brings nutrients to articular cartilage
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