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Muscles of the Back

Stack #64395

MuscleAttachmentInnervationMain Action(s)
Trapezius Muscle External occipital protuberance, Nuchal ligament, Spine & acromion of scapula Spinal Accessory Nerve (CN 11) Elevates, retracts and depresses scapula
Latissimus Dorsi Muscle Spines of T7-T12, Thoracolumbar fascia, iliac crest Thoracodorsal Nerve Extends, retracts, and medially rotates humerous at shoulder
Rhomboid Major Muscle T2-T5, Medial border of scapula Dorsal Scapular Nerve Rotate and retract scapula
Rhomboid Minor Muscle Nuchal ligament, Medial border of scapula Dorsal Scapular Nerve Rotate and retract scapula
Levator Scapulae Muscle Transverse processes C1-C4, Superior angle of scapula Dorsal Scapular Nerve Rotates scapula
Serratus Posterior Superior Muscle Nuchal ligament, Superior borders of ribs 2-4 Intercostal Nerve Respiratory muscles
Serratus Posterior Inferior Muscle Superior borders of ribs 8-12 Intercostal Nerve Respiratory muscles
Splenius Capitis Muscle Nuchal ligament, Mastoid process Posterior rami of spinal nerves Extends head and neck
Splenius Cervicis Muscle Nuchal ligament, Transverse processes C1-C4 Posterior rami of spinal nerves Extends head and neck
Semispinalis, Rotatores, and Multifidus (Deep transversospinal muscles of the back) Spinous processes of more superior vertebrae Dorsal rami of spinal nerves Extension, stabilizes vertebrae
Spinalis Muscle Spinous processes Dorsal rami of spinal nerves Extend, laterally bend vertebral column
Longissimus Muscle Sacrum, Transverse processes of T, C vertebrae, Mastoid process of temporal bone Dorsal rami of spinal nerves Extend, laterally bend vertebral column
Iliocostalis Muscle Iliac crest, Ribs Dorsal rami of spinal nerves Extend, laterally bend vertebral column
Created by: joplinette