A prison gang, correctly defined, is any gang (where a gang is a group of three or more persons who recurrently commit crime, and where the crime is openly known to the group) that operates in prison.
The skeletal system can be thought of as the passive partner in producing movement; the muscular system can be thought of as the active partner. This chapter explains how muscles interact with bones to maintain posture and produce movement.he skeletal system can be thought of as the passive partner in producing movement; the muscular system can be thought of as the active partner. This chapter explains how muscles interact with bones to maintain posture and produce movement.
Bones have many functions, including the following: 1  Support: Bones provide a framework for the attachment of muscles and other tissues. 2  Protection: Bones such as the skull and rib cage protect internal organs from injury.  Movement: Bones enable body movements by acting as levers and points of attachment for muscles.