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What is the weakest part of the skeleton?
Joints
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What is the name of the site where two or more bones meet?
articulation
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What are the 2 functions of joints?
- *give the skeleton mobility
- *hold the skeleton together
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Which classification of joints focoses on the material binding bones together and whether or not a joint cavity is present?
Structural Classification
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What are the 3 structural classifications?
- Fibrous
- Cartilaginous
- Synovial
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What classification is based on the amount of movement allowed by a joint?
Functional Classification
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What are the three functional classes of joints?
- Synarthroses
- Amphiarthroses
- Diarthroses
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Synarthroses means
immovable
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Amphiarthroses means
slightly movable
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Diarthroses means
freely movable
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In which structural classification are the bones joined by fibrous tissues?
Fibrous Structural joints
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There is no joint cavity in which structural joint?
Fibrous structural joints
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Most structural joints are immovable?
Fibrous Structural joints
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What are the 3 types of fibrous structural joints?
- sutures
- syndesmoses
- gomphoses
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What type of fibrous structural joint occurs between the bones of the skull?
Sutures
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Which fibrous structural joint is comprised of interlocking junctions completely filled with connective tissue fibers?
Sutures
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What binds bones together, but allows for growth during childhood?
Sutures
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In middle age, skull bones fuse and are called
synostoses
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In what fibrous structural joint are bones connected by fibrous tissue ligaments?
Syndesmoses
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In syndesmoses, movement varies from to slightly variable.
immovable
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Examples of syndesmoses are the connections between
tibia and fibula, and radius and ulna
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What type of joint has articulating bones that are united by cartilage?
Cartilaginous
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Like Fibrous joints this type of joint also lacks a joint cavity?
Cartilaginous Joint
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What are the 2 types of cartilaginous joints?
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In synchondroses, a bar or plate of what kind of cartilage unites the bones?
Hyaline
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All synchondroses are ?
synarthrotic
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Examples of synchondroses are
- epiphyseal plates of children
- joint between costal cartilage of the first rib and sternum
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Those joints in which thh articulating bones are separated by a fluid-containing joint cavity are
Synovial joints
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Amphiarthrotic joints that are designed for strength and flexibility are
Symphyses
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All of these joints are freely movable diarthroses.
Synovial Jints
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All Synovial joints have
- Articular cartilage
- joint cavity
- articular capsule
- synovial fluid
- reinforcing ligaments
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Stability in synovial joints is determined by
- articular surfaces
- ligaments
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Shape determines what movements are possible.
Articular surfaces
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Unite bones and prevent excessive or undesirable motion
Ligaments
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THe 2 muscle attachments across a joint are:
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Attachment to the immovable bone
Origin
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Attachment to the movable bone
Insertion
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An inflammation of a bursa, usually caused by blow or friction
Bursitis
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Inflammation of tendon sheaths typically caused by overuse
Tendonitis
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What type of arthritis is most common, often called wear-and-tear?
Osteoarthritis
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Chronic, inflammatory, autoimmune disease of unknown cause, with an insidious onset.
Rheumatoid Arthritis.
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