Section 7.4 review

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Which type of freely movable joint allows the greatest range of motion?

ball-and-socket joint

synovial fluid

viscid lubricating fluid secreted by the membrane lining joints and tendon sheaths etc.

How does osteoarthiritis help to reveal the importance of articular cartilage in freely movable joints?

when the cartilage is worn down, it can cause severe pain.

Give an example of a freely movable joint, a slightly movable joint, and an immovable joint.

freely movable joint:ball-and-socket joints slightly movable joint: pivot joint immovable joint:

Arthritis

inflammation of a joint or joints

what is the most common type of arthritis? which type is the most serious?

osteoarthritis, rheumatoid arthritis

In a paragraph, explain the design of a freely movable (synovial) joint and describe the types of movements for which each type of synovial joint is designed

the different types of synovial joints have all different ranges of movement, like up, down, left, right, rotating, and so on.

joint

the point of connection between two bones or elements of a skeleton (especially if the articulation allows motion)

ligaments

tissue that connects bone to bone, fibrous tissue that connects bones to provide stability to joints

osteoarthritis

chronic breakdown of cartilage in the joints

rheumatoid arthritis

a chronic autoimmune disease with inflammation of the joints and marked deformities

dislocation

a displacement of a part (especially a bone) from its normal position (as in the shoulder or the vertebral column)

sprain

a painful injury to a joint caused by a sudden wrenching of its ligaments


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