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Body Atlas, Muscle Reference

Muscles

Complete muscle reference, origins, insertions, nerve supply, actions, clinical notes, and common injuries.

330 muscles

330 muscles

Muscle Tibialis Posterior musculus tibialis posterior Lower Leg The tibialis posterior is the deepest muscle of the posterior leg compartment, originating from the interosseous… Muscle Transverse Perinei musculus transversus perinei superficialis et profundus Pelvis & Hip The transverse perinei are paired muscles running from the ischial tuberosities to the central perineal body… Muscle Transversus Abdominis musculus transversus abdominis Abdomen The transversus abdominis is the deepest abdominal muscle with horizontal fibres wrapping around the trunk like… Muscle Trapezius musculus trapezius Upper Back The trapezius is a large, kite-shaped muscle covering the posterior neck and most of the upper… Muscle Trapezius (Lower) musculus trapezius pars ascendens Upper Back The lower trapezius is the most important trapezius component for overhead function, providing the scapular depression… Muscle Trapezius (Middle) musculus trapezius pars transversa Upper Back The middle trapezius runs almost horizontally from the upper thoracic spinous processes to the scapular spine,… Muscle Trapezius (Upper) musculus trapezius pars descendens Upper Back The upper trapezius is the most superficial and visible portion of the trapezius, running from the… Muscle Triceps Brachii musculus triceps brachii Upper Arm The triceps brachii is the sole extensor of the elbow joint, composed of three heads, a… Muscle Triceps Brachii Long Head musculus triceps brachii caput longum Upper Arm The long head of the triceps is the only triceps head to cross the shoulder joint,… Muscle Vastus Intermedius musculus vastus intermedius Thigh The vastus intermedius is the deepest of the four quadriceps heads, lying directly on the anterior… Muscle Vastus Intermedius (Full) musculus vastus intermedius Thigh The vastus intermedius is the deepest quadriceps muscle, lying directly on the femoral shaft deep to… Muscle Vastus Lateralis musculus vastus lateralis Thigh The vastus lateralis is the largest of the four quadriceps heads, forming the prominent rounded mass… Muscle Vastus Lateralis musculus vastus lateralis Thigh The vastus lateralis is the largest of the four quadriceps muscles, occupying the entire anterolateral thigh.… Muscle Vastus Lateralis Oblique musculus vastus lateralis obliquus Thigh The VLO represents the oblique distal fibres of the vastus lateralis that exert a lateral pull… Muscle Vastus Medialis musculus vastus medialis Thigh The vastus medialis is the most medial quadriceps head, its distal oblique fibres forming the VMO… Muscle Vastus Medialis Oblique musculus vastus medialis obliquus Thigh The VMO is the obliquely oriented distal fibres of the vastus medialis, distinguished from the more… Muscle Zygomaticus Major musculus zygomaticus major Head & Skull The zygomaticus major is the primary smiling muscle, running obliquely from the cheekbone to the corner… Muscle Zygomaticus Minor musculus zygomaticus minor Head & Skull The zygomaticus minor is a small muscle of facial expression connecting the zygomatic bone to the…