Normal Anatomy

Erector spinae muscle

a long muscle system parallel to the spinous processes of the cervico-thoraco-lumbar spine. Composed of three parts: ilio-costo-cervicalis (lateral), longissimus (intermediate), and spinalis (medial). See abdominal wall (II), Fig. 4, abdominal wall (II), Fig. 5, abdominal wall (II), Fig. 6, abdominal wall (II), Fig. 7, lumbar spine (II), Fig. 4, lumbar spine (II), Fig. 10, lumbar spine (II), Fig. 12, lumbar spine (II), Fig. 13, lumbar spine (II), Fig. 14, muscles of the neck (II), Fig. 6, sacrum (II), Fig. 4, thoracic cage (II), Fig. 5, thoracic cage (II), Fig. 6, thoracic cage (II), Fig. 7, thoracic cage (II), Fig. 9, thoracic cage (II), Fig. 10, thoracic cage (II), Fig. 11, thoracic cage (II), Fig. 12, thoracic spine (II), Fig. 3, thoracic spine (II), Fig. 4, thoracic spine (II), Fig. 5, thoracic spine (II), Fig. 8, thoracic spine (II), Fig. 10, thoracic spine (II), Fig. 11

KJ