For further assistance, please contact Navy Federal toll-free in the U.S. at 1-888-868-8123.For toll-free numbers when overseas, visit navyfederal.org/overseas. Use 1-703-255-8837 for collect international calls. Sign In. Sign into online banking with your unique Username, which may be your access number.
Voluntary muscles are the muscles that can be controlled consciously, and are made up of cylindrical fibres. Generally, these muscles are attached to bones of the skeleton, thus called the skeletal muscles. Skeletal muscles are striated and are made up of multinucleate cells.
Skeletal Muscles. The voluntary or skeletal muscle system consists of more than 650 muscles, which produce body movement and help maintain an upright posture.Voluntary muscles are The voluntary or skeletal muscle system consists of more than 650 muscles, which produce body movement and help maintain an upright posture.bdominal muscles protect the internal organs. Arm and leg muscles, among the most powerful in the body, produce limb movements. Acting like cables, muscles pull on bones to produce movement. This involves the contraction and shortening of individual muscle fibers.