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.
What is the role of the muscular system? The skeletal muscles in the human body cover the skeleton, and they allow people to stand erect, walk, bend and move around. These muscles are controlled by the individual and contract and extend at will. Muscles use a large amount of the body's energy when they contract.