Question

it is a synarthrosis joint because it can move slightly. it is a synarthrosis joint because it can move freely. it is a diarthrosis joint because it can move slightly. it is a diarthrosis joint because it can move freely.

Explanation:

1. Recall the definitions of joint types:

• Synarthrosis joints are immovable (e.g., skull sutures).
• Diarthrosis joints (synovial joints) are freely movable (e.g., shoulder, knee, wrist).
• Amphiarthrosis joints are slightly movable (e.g., pubic symphysis, intervertebral discs).

1. The wrist (the joint pointed to) is a synovial (diarthrosis) joint, which allows free movement.
2. Analyze each option:

• First option: Synarthrosis can't move slightly (they're immovable) – incorrect.
• Second option: Synarthrosis can't move freely – incorrect.
• Third option: Diarthrosis joints move freely, not slightly – incorrect.
• Fourth option: Diarthrosis joints (like the wrist) move freely – correct.

Answer:

D. It is a diarthrosis joint because it can move freely.