Using a functional classification term, you tell me that an ______ joint is defined as being slightly moveable.

Using a functional classification term, you tell me that an ______ joint is defined as being slightly moveable.

• A. Diarthrotic
• B. Synarthrotic
• C. Amphiarthrotic
• D. Synarthrosis

Answer: (C)

Functional classification of joints groups them by motion: immovable, slightly movable, and freely movable. Slightly movable joints are called amphiarthrotic joints. This category includes joints that allow limited motion, like the intervertebral joints and the pubic symphysis, which provide stability while still permitting some movement. The term amphiarthrotic directly describes that limited mobility. Diarthrotic means freely movable, so that’s not correct for slightly movable. Synarthrotic refers to immovable joints, and synarthrosis is the name for an immobile joint type.

Functional classification of joints groups them by motion: immovable, slightly movable, and freely movable. Slightly movable joints are called amphiarthrotic joints. This category includes joints that allow limited motion, like the intervertebral joints and the pubic symphysis, which provide stability while still permitting some movement. The term amphiarthrotic directly describes that limited mobility.

Diarthrotic means freely movable, so that’s not correct for slightly movable. Synarthrotic refers to immovable joints, and synarthrosis is the name for an immobile joint type.