Muscles

Muscles - EXSS 175 Muscle Set #1: Muscles 1-35 Superficial...

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Unformatted text preview: EXSS 175 Muscle Set #1: Muscles 1-35 Superficial Back Trapezius Latissimus dorsi Rhomboid Major Rhomboid Minor Levator Scapulae Serratus Anterior Trapezius Origin: Superior nuchal line of occipital bone, ligamentum nuchae, and spines of C7 and T1-T12 Insertion: Clavicle, acromion, and spine of scapula Action: Upper Trap: Elevate scapula and extend head Middle Trap: Retract scapula Lower Trap : Depress Scapula Innervation: Spinal Accessory Nerve Trapezius Superficial Back Latissimus Dorsi Origin: Spines of T7-T12 and L1-L5, sacrum and ilium, inferior 4 ribs Insertion: Bicipital Groove Action: Extends, adducts, and internally rotates the arm at the shoulder joint; draws arm inferiorly and posteriorly Innervation: Thoracodorsal Nerve Latissimus Dorsi Superficial Back Rhomboid Major Origin: Spines of T2-T5 Insertion: Medial border of scapula inferior to spine Action: Elevation, retraction and downward rotation of the scapula Innervation: Dorsal Scapular Nerve Rhomboid Major Superficial Back Rhomboid Minor Origin: Spines of C7-T1 Insertion: Medial border of scapula superior to spine Action: Elevation, retraction and downward rotation of the scapula Innervation: Dorsal Scapular Nerve Rhomboid Minor Superficial Back Levator Scapulae Origin: Transverse processes of C1-C4 Insertion: Superior medial border of scapula Action: Elevation and downward rotation of the scapula Innervation: Dorsal Scapular Nerve Levator SCapulae Superficial Back Serratus Anterior Origin: Superior 9 ribs Insertion: Medial border of scapula Action: Protraction and upward rotation of the scapula Innervation: Long Thoracic Nerve Serratus Anterior Superficial Back Deep Back Erector Spinae Transversospinalis Multifidis Rotatores Erector Spinae: Iliocostalis Lumborum Origin: Cervicis: Superior 6 ribs Thoracis: Inferior 6 ribs Lumborum: Iliac Crest Insertion: Cervicis: TP of C4-C6 Thoracis: Superior 6 ribs Lumborum: Inferior 6 ribs Action: Together: Extend and maintain erect posture of spine Singly: Laterally flex vertebral column of respective region Innervation: Spinal Nerves Erector Spinae Deep Back Erector Spinae: Longissimus Thoracis Origin: Capitis:...
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This note was uploaded on 11/16/2011 for the course EXSS 175 taught by Professor Zinder during the Fall '08 term at UNC.

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Muscles - EXSS 175 Muscle Set #1: Muscles 1-35 Superficial...

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