Back Muscles Flashcards
Trapezius Origin
Superior nuchal line
Ligamen nuchae
C7-T12 Spinous Processes
Trapezius Insertion
Spine of scapula
Acromion
Lateral 1/3 of clavicle
Trapezius Innervation
Accessory Nerve
C3
C4
Trapezius Action
At scapula Adduct Elevates Depresses Rotates
Levator Scapulae Origin
Transverse process of C1-C4
Levator Scapulae Insertion
Medial border of scapula
Levator Scapulae Innervation
Dorsal scapular nerve
C3
C4
Levator Scapulae Action
Elevates scapula
Rhomboid Minor Origin
Spines of C7-T1
Rhomboid Minor Insertion
Root of spine scapula
Rhomboid Minor Nerve
Dorsal scapular nerve
C5
Rhomboid Minor Action
Adducts scapula
Rhomboid Major Origin
Spines of T2-T5
Rhomboid Major Insertion
Medial border of scapula
Rhomboid Major Nerve
Dorsal scapular nerve
C5
Rhomboid Major Action
Adducts scapula
Latissimus Dorsi Origin
Spines of T5-T12
Thoracolumbar fascia
Iliac crest
Ribs 9-12
Latissimus Dorsi Insertion
Floor of bicipital groove of humerus
Latissimus Dorsi Innervation
Thoracodorsal nerve
Latissimus Dorsi Action
Adducts, extends and rotates arm medially
Serratus Anterior Origin
Outer surface of ribs 1-8
Serratus Anterior Insertion
Medial border of scapula
Serratus Anterior Innervation
Long thoracic nerve
Serratus Anterior Action
Abducts and protracts scapula