管骨

例句：

1. 1. The skeletal system of the human body is made up of a complex network of bones and cartilages.
   人类的骨骼系统由复杂的骨头和软骨网络组成。
2. 2. The structure of the vertebral column is crucial for supporting the body's weight and allowing movement.
   脊柱的结构对于支撑身体重量和允许运动至关重要。
3. 3. In some species, the rib cage is used as an air sac to store and distribute oxygen.
   在有些物种中，肋骨构成气囊用于储存和分配氧气。