1 Meanwhile, for icing, combine milk and flour in a saucepan; cook until thick. Cover and refrigerate.  In a bowl, beat butter, shortening, sugar and vanilla until creamy. Add chilled milk mixture and beat 10 minutes.
Muscular system. The muscular system is an organ system consisting of skeletal, smooth and cardiac muscles. It permits movement of the body, maintains posture, and circulates blood throughout the body. The muscular system in vertebrates is controlled through the nervous system, although some muscles (such as the cardiac muscle) can be completely autonomous.
Muscular system. Definition. noun. An organ system comprised of skeletal muscles, smooth muscles, and cardiac muscles that are responsible for providing strength, keeping up balance, maintaining posture, allowing movement and producing heat. Supplement.The animal body is comprised of various organ systems and the muscular system is one of them.he muscular system includes all the muscle tissues such as the skeletal muscle tissues, smooth muscle tissues, and cardiac muscle tissues. The skeletal muscles are muscles attached to the bones and are responsible for the voluntary movements of the body.