Muscle of day: neck and shoulder
Infraspinatus Origin
Infraspinous fossa of scapula
Levator Scapulae Origin
Transverse processes of C1-C4
Rhomboids Insertion
Vertebral border of scapula from root of spine to inferior angle
Supraspinatus Action
Abduction of arm
Deltoid Action
Abduction of arm Anterior fibers flex and internally rotate arm Posterior fibers extend and externally rotate arm
Pectoralis Minor Origin
Anterior aspect of ribs 3-5
Deltoid Origin
Anterior surface of lateral 1/3 of clavicle, acromion and spine of scapula
Deltoid Innervation
Axillary nerve (C5, C6)
Pectoralis Major Origin
Clavicular head: medial 1/2 of clavicle Sternal head: sternum and costal cartilage of upper 6 ribs
Pectoralis Minor Action
Depression of scapula
Rhomboids Innervation
Dorsal scapular (C5)
Levator Scapulae Innervation
Dorsal scapular n. (C5)
Teres Major Origin
Dorsal surface of inferior angle of scapula
Infraspinatus Action
External rotation of arm
Latissimus Dorsi Insertion
Floor of intertubercular groove
Serratus anterior origin
Lateral aspect of upper 8 to 9 ribs
Teres Major Innervation
Lower subscapular (C6, C7)
Pectoralis Major Innervation
Medial and lateral pectoral Clavicular (C5-C6) Sternal (C7-T1)
Teres Major Insertion
Medial lip of intertubercular groove
Infraspinatus Insertion
Middle facet of greater tubercle of humerus
Rhomboids Origin
Minor: spinous processes C7-T1 Major: spinous processes T2-T5
Serratus anterior action
Protraction and upward rotation of scapula
Trapezius Action
Retraction and upward rotation of scapula Upper fibers elevate scapula Lower fibers upwardly rotate and depress the scapula
Latissimus Dorsi Origin (6)
Spinous processes of lower 6 thoracic and all lumbar vertebrae Thoracolumbar fascia Sacrum Iliac crest portions of lower 3 ribs inferior angle of scapula
Levator Scapulae Insertion
Superior angle of scapula
Supraspinatus Insertion
Superior facet of greater tubercle of humerus
Trapezius Insertion
Superior fibers: posterior surface of lateral 1/3 of clavicle and acromion Middle fibers: acromion and spine of scapula Lower fibers: medial 1/3 of spine of scapula
Infraspinatus Innervation
Suprascapular nerve (C5, C6)
Supraspinatus Innervation
Suprascapular nerve (C5, C6)
Supraspinatus Origin
Supraspinous fossa of scapula
Latissimus Dorsi Innervation
Thoracodorsal (C6-C8)
Teres Major Action
Adduction, extension and internal rotation of arm
Pectoralis Major Action
Adduction and internal rotation of arm Clavicular head: flexes arm Sternal head: extends arm
Latissimus Dorsi Action
Adduction, extension and internal rotation of arm
Pectoralis Minor Insertion
Coracoid process
Serratus anterior insertion
Costal surface of vertebral border of scapula
Deltoid Insertion
Deltoid tuberosity of humerus
Levator Scapulae Action
Elevation and downward rotation of scapula
Rhomboids Action
Elevation, retraction, and downward rotation of scapula
Pectoralis Major Insertion
Lateral lip of intertubercular groove
Serratus anterior innervation
Long thoracic (C5-C7)
Trapezius Origin
Superior nuchal line External occipital protuberance Ligamentum nuchae Spinous processes C7-T12
Pectoralis Minor Innervation
medial and lateral pectoral (C6-C8)
Trapezius Innervation
spinal accessory (XI)
