Superficial Back Muscles Flashcards
POINA
Latissimus Dorsi Purposeful Activity
wheelchair mobility, standing from sitting
Latissimus Dorsi Action
extend shoulder
adduct shoulder
internally rotate shoulder
Latissimus Dorsi PA
spinous processes of T7-T12, thoracolumbar fascia, iliac crest, ribs 9/10-12, inferior angle of scapula*
Latissimus Dorsi DA
intertubercular sulcus of humerus
Latissimus Dorsi Innervation
thoracodorsal nerve C6, C7, C8
Trapezius Purposeful Action
reaching for an object overhead, rowing
Upper Trapezius Action
(bilaterally) extend head and neck
(unilaterally) laterally flex head and neck
rotate head and neck to opposite side
elevate scapula
upwardly rotate scapula
Middle Trapezius Action
adduct/retract scapula
stabilize scapula
Lower Trapezius Action
depress scapula
upwardly rotate scapula
Trapezius PA
external occipital protuberance, superior nuchal line of occiput, ligamentum nuchae, spinous processes of C7-T12
Trapezius DA
lateral 1/3 of clavicle, acromion, spine of scapula
Trapezius Innervation
spinal accessory nerve (cranial nerve XI), ventral rami C3 and C4
Levator Scapulae Purposeful Activity
shrugging shoulders, carrying object on one side
Levator Scapulae Action
elevate scapula
downwardly rotate scapula
Levator Scapulae PA
transverse processes of C1-C4
Levator Scapulae DA
medial border of scapula b/w superior angle and root of spine of scapula
Levator Scapulae Innervation
cervical C3 and C4, dorsal scapular nerve C4 and C5
Rhomboids Purposeful Activity
reaching into back pocket
Rhomboids Action
adduct/retract scapula
downwardly rotate scapula
fix scapula to thoracic wall
Rhomboids PA
(major) spinous processes of T2-T5
(minor) nuchal ligament and spinous processes of C7-T1
Rhomboids DA
(major) medial border of scapula b/w spine and inferior angle
(minor) medial border of scapular spine
Rhomboids Innervation
dorsal scapular nerve C4 and C5
