Functions :• Acts as a framework that ____ soft tissues. • It allows free movement through the action of ____ across joints. • It ____ delicate organs and structures such as the brain and lungs. • The skeletal portion of the system serves as the main ____ system for calcium and phosphorus. These minerals can be released when needed by the body. • The red marrow of some bones is an important site for ____ or blood cell production; all erythrocytes, platelets, and most leukocytes form in bone marrow from where they migrate to the circulation. • The axial skeleton functions to support and protect the ____ of the dorsal and ventral cavities. • It also serves as a surface for the ____ of muscles and parts of the appendicular skeleton. There are 2 main divisions of the skeleton: Axial skeleton: the part of the skeleton that consists of the bones of the head and trunk of a vertebrate animal. The main divisions of the axial skeleton are: • ____, including the bones of the skull (cranium), face, auditory ossicles, and hyoid bone • ____, including the rib cage and sternum • ____ column ____ skeleton: consists of the bones that support and compose the appendages (for example, the arms and legs of humans). It involved in locomotion and ____ of objects in the environment. The bones of the appendicular skeleton are divided into two groups: • the bones that are located within the ____ and hindlimbs • and the girdle bones that attach the ____ to the axial skeleton. The bones of the ____ girdle anchor the upper limb to the thoracic cage of the axial skeleton. The pelvic ____ is formed by a single bone and serves as the attachment point for each lower limb.

The skeletal system

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