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.
Functions of the Muscles. The Human muscular system is made up of a complex network of soft tissues which are called muscles. Muscle tissue is found throughout the human body and it has the following functions; 1  Movement. 2  Skeletal muscles attached to the skeleton move the body by moving bones. Perimysium. 2  Within each skeletal muscle, the muscle fibers are separated into groups. 3  Each group, which resembles a bundle of sticks tied together, is called a fascicle (bundle). 4  Surrounding each fascicle is a layer of fibrous connective tissue called perimysium (around the muscle [fascicle]).