1. The skeletal system consists of bone and cartilage and performs several important physiological functions. It includes the bones of the axial skeleton such as the skull, vertebrae, ribs, and the bones of the appendicular skeleton like the shoulders, arms, hips, and legs.
2. Bones are made of both living and non-living materials. The living parts include bone cells while the non-living parts include the bone matrix made of collagen and hydroxyapatite. Bones can be classified based on their microscopic structure and location in the body.
3. The skeletal system allows for movement through joints which can be fibrous, cartilaginous, or synovial. The main types of synovial
Related topics: