Joints, also known as articulations, are regions where two or more bones meet. They are classified into three types: diarthrosis, amphiarthrosis, and synarthrosis. This classification is based according to their function. Which of the following joints is a amphiarthrosis?
- Shoulder joint
- Hip joint
- Vertebral joint
- Skull sutures
Answer: 3
A vertebral joint is an amphiarthrosis, or a slightly movable joint. The shoulder joint and the hip joint are diarthrosis, or freely immovable joints. Skull sutures are a synarthrosis, or immovable joint.
Amphiarthrosis: 半関節
Diarthrosis: 可動結合
Synarthrosis: 不動結合