Muscular System PDF

Muscular system  Muscular system Skeletal muscle Smooth muscle Cardiac muscle  Muscular system Skeletal muscle: oMuscle attached to the bones of the skeleton and move it oExample :muscles of the upper and lower limb oVoluntary control (somatic nervous...

Muscular system  Muscular system Skeletal muscle Smooth muscle Cardiac muscle  Muscular system Skeletal muscle: oMuscle attached to the bones of the skeleton and move it oExample :muscles of the upper and lower limb oVoluntary control (somatic nervous system) oStriated and multinucleated muscle fibers  Muscular system Smooth muscle: oSite: GIT-urinary bladder-blood vessels-respiratory tract oInvoluntary control (autonomic nervous system) oSpindle shaped muscle fibers with single nucleus  Muscular system Cardiac muscle: oSite: myocardium of the heart oAutonomically regulated –spontaneous contraction oStriated muscle fibers with single nucleus oFibers branch and fuse together to form syncytium Muscular system Muscular system Terms of movement  Terms of movement Flexion: bending Extension : straightening  Terms of movement Flexion: bending Extension : straightening  Terms of movement abduction: movement away from median plane adduction :movement towards median plane  Terms of movement Circumduction: flexion-abduction-extention –adduction Example: shoulder-hip joint  Terms of movement Medial rotation: anterior surface of the bone face medially Lateral rotation: anterior surface of the bone face laterally  Terms of movement supination Pronation  Terms of movement Inversion Eversion