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Based on the number of axes of rotation, plane joints are usually classified as ______ joints.

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Final answer:

Plane joints are classified as multiaxial joints, allowing for multiple movements but with a range often limited by surrounding structures. These joints are characterized by flat or slightly curved articulating surfaces and are found in areas like the wrist, foot, and between vertebrae.

Step-by-step explanation:

Based on the number of axes of rotation, plane joints are usually classified as multiaxial joints. These joints are found between bones that have flat or slightly curved articulating surfaces and are sometimes referred to as gliding joints.

Although they allow for multiple movements, the range of motion at a plane joint is usually small and tightly constrained by surrounding ligaments, meaning not all movements may be available at each plane joint due to limitations imposed by neighboring bones or ligaments.

Examples of plane joints include those between the carpal bones of the wrist and the tarsal bones of the foot, as well as between the vertebrae. Unlike ball-and-socket joints, which offer a wide range of motion, plane joints generally permit only minimal movements.

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