Actions
(2 total)
Internal (medial) rotation, stabilize GH jt
The origin of the levator scapulae.
C1-C4 spinous process
The insertion of the subclavian m.
The inferior surface of the clavicle
The innervation of the supraspinatus m.
Suprascapular n.
Muscles that protract the scapula
(2 total)
Serratus anterior and teres min.
The action of the lattismus dorsi m.
(3 total)
Extension, adduction, medial rotation of the humerus
The origin of the serratus anterior m.
Ribs 1-8
The insertion of the subscapularis m.
Less tubercle of hum.
The innervation of the trapezius m.
XI Spinal accessory n.
Innervated by the dorsal scapular n.
(3 total)
Levator scapulae, rhomboid maj., rhomboid min. m.
The action of the teres maj. m.
(3 total)
Adduct, internal rotation, external rotation of the humerus
The origin of the rhomboid maj. m.
Spinous process T2 -T5
The insertion of the rhomboid maj.
The medial border of the scapula
The innervation of the teres min. m.
Axillary n.
Muscles that insert on the greater tubercle
(3 total)
Supraspinatus, infraspinatus, teres min.
The action of the upper, mid, lower trapezius m.
(2 total) (1 total) (2 total)
upper: elevate, superiorly rotate scapula
mid: retract scapula
lower: depress, superiorly rotate scapula
The origins of the pec. maj.
Sternal/ Sternocostal head: sternum, (costal cartilages 1-6)
Clavicular head: Anterior surface of the medial 1/3 of the clavicle
The insertion of the pec. min. m.
Coracoid process
The innervation of the teres maj. m.
Lower subscapular n.
Muscle that insert on bicipital groove.
(3 total)
Lattismus dorsi, pectoralis maj., teres maj.
The action of the upper, mid, lower deltoid m.
(4 total) (1 total) (3 total)
upper: adduction, flexion, medial (internal) rotation, and lateral (external) rotation of the humerus
middle: abduct humerus
lower: abduction, lateral (external) rotation, and extension
The origin of upper, mid, lower deltoid m.
upper: clavicle
middle: acromion of the scapula
lower: spine of the scapula
The insertions of the lattisimus dorsi m.
(4 total)
Thoracolumbar fascia, ribs 8-12, iliac crest, spinous process C6-12
The innervation of the lattismus dorsi m.
Thoracodorsal n.
Muscles that perform medial (internal) rotation of the humerus (4 total)
Pec maj m., subscapularis m., teres maj. m. upper deltoid m.