10: The Muscular System Last updated Apr 4, 2022 Save as PDF 9.7: Smooth Muscle 10.1: Prelude to the Muscular System Page ID61569 OpenStaxOpenStax ( \newcommand{\kernel}{\mathrm{null}\,}\) 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. 10.1: Prelude to the Muscular System10.2: Interactions of Skeletal Muscles, Their Fascicle Arrangement, and Their Lever Systems10.3: Naming Skeletal Muscle10.4: Axial Muscles of the Head, Neck, and Back10.5: Axial Muscles of the Abdominal Wall and Thorax10.6: Muscles of the Pectoral Girdle and Upper Limbs10.7: Appendicular Muscles of the Pelvic Girdle and Lower Limbs