The muscular system is responsible for the movement of the human body. Attached to the bones of the skeletal system are about 700 named muscles that make up roughly half of a personâs body weight. Each of these muscles is a discrete organ constructed of skeletal muscle tissue, blood vessels, tendons, and nerves.elated to the function of movement is the muscular systemâs second function: the maintenance of posture and body position. Muscles often contract to hold the body still or in a particular position rather than to cause movement.
Derry is a borough in Westmoreland County in the Commonwealth of Pennsylvania, 45 miles (72 km) east of Pittsburgh. The Borough of Derry, consisting of the town area, should not be confused with Derry Township, which is a separate municipality surrounding the borough.
Liverpool, PA Other Information. 1  Located in PERRY County, Pennsylvania. 2  Liverpool, PA is also known as: 3  MOUNT PATRICK, PA.  ORIENTAL, PA.