A United States Navy enlisted rank indicates where an enlisted Sailor stands within the chain of command, and also defines one's pay grade. An enlisted sailor's rate is similar conceptually to a naval officer's rank. Only Naval Officers carry the term rank in the Navy.
Muscular system is the system of Human Body that provides motor power for all movements of body parts. Muscular system is composed of special tissue called muscular tissue. Muscles have the ability to contract actvely to provide the force for movements of body parts.
Muscles of the human body. Photo courtesy National Library of Medicine. Muscles are one of those things that most of us take completely for granted, but they are incredibly important for two key reasons: 1  Muscles are the engine that your body uses to propel itself.ut there are three unique kinds of muscle in any mammal's body: 1  Skeletal muscle is the type of muscle that we can see and feel. 2  When a body builder works out to increase muscle mass, skeletal muscle is what is being exercised.