1/3 Origin, Insertion, Action, Innervation
Pectoralis Major: Action
- Adduction and medial rotation of arm - flexion and extension of arm
Rhomboid Major: Action
- Elevation and retraction of scapula - Downward rotation of glenoid cavity
Pectoralis Major: Innervation
- Lateral (C5-C7) - medial (C8-T1) pectoral nerves
Trapezius: Insertion
- Lateral 1/3 clavicle - Acromion
Pectoralis Major: Origin
- Medial 1/2 of clavicle - sternum - costal cartilage 1-6
Trapezius: Origin
- Medial third of superior nuchal line - occipital protuberance - nuchal ligament - spinous processes of C7-T12
Deltoid: Action
- abduction, flexion and medial rotation of arm - extension and lateral rotation of arm
Teres Major: Action
- adduction - medial rotation of arm - extension of arm
Levator Scapulae: Innervation
- dorsal scapular nerve - c3 -c5
Trapezius: Action
- elevates scapula - retracts scapula - depresses scapula - rotation of glenoid cavity upward
Rhomboid Minor: Action
- elevation and retraction of scapula - downward rotation of glenoid cavity
Latissimus Dorsi: Insertion
- intertubercular groove of humerus - crest of lesser tubercle
Serratus Anterior: Action
- protracts scapula - upward rotation of glenoid cavity - holds medial border against thoracic wall
Latissimus Dorsi: Origin
- spinous process of t7-t12 - thoracolumbar fascia - iliac crest - inferior three ribs
Levator Scapulae: Insertion
- superior angle of scapula - medial border of scapula
Sternocleidomastoid: Origin
- tendinour head of sternum - medial portion of clavicle
Deltoid: Innervation
Axillary nerve (C5, C6)
Teres Minor: Innervation
Axillary nerve (C5, C6)
Rhomboid Major: Innervation
Dorsal Scapular Nerve (c4, c5)
Sternocleidomastoid: Action
Flexes and laterally rotates the head
Subclavius: Insertion
Inferior surface of clavicle (subclavian groove)
Teres Minor: Action
Lateral rotation of arm
Serratus Anterior: Innervation
Long thoracic nerve (C5-C7)
Rhomboid Major: Insertion
Medial border of scapula at base of spine
Subscapularis: Action
Medial rotation of arm
Subclavius: Innervation
Nerve to subclavius (C5, C6)
Serratus Anterior: Origin
Ribs 1-8
Infraspinatus: Innervation
Suprascapular nerve (C5, C6)
Supraspinatus: Innervation
Suprascapular nerve (C5, C6)
Latissimus Dorsi: Innervation
Thoracodorsal nerve (C6-C8)
Supraspinatus: Action
abduction of arm
Trapezius: Innervation
accessory nerve (c3 and c4)
Deltoid: Origin
clavicle and scapula
Pectoralis Minor: Insertion
coracoid process of scapula
Sternocleidomastoid: Innervation
cranial nerve 11, accessory nerve
Pectoralis Major: Insertion
crest of greater tubercle of humerus
Deltoid: Insertion
deltoid tuberosity of humerus
Subclavius: Action
depresses clavicle, maintains sternoclavicular joint
Rhomboid Minor: Innervation
dorsal scapular nerve c5
Pectoralis Minor: Action
draws scapula forward and downward
Levator Scapulae: Action
elevates scapula
Latissimus Dorsi: Action
extends, adducts, and medially rotates humerus
Subclavius: Origin
first rib
Supraspinatus: Insertion
greater tubercle of humerus
Teres Major: Insertion
greater tubercle of humerus
Teres Minor: Insertion
greater tubercle of humerus
Infraspinatus: Insertion
greater tubercle of humerus, below supraspinatus
Teres Major: Origin
inferior angle of scapula
Infraspinatus: Origin
infraspinous fossa of scapula
Teres Minor: Origin
lateral border of scapula
Infraspinatus: Action
lateral rotation of arm
Subscapularis: Insertion
lesser tubercle of humerus
Teres Minor: Innervation
lower subscapular nerve
Sternocleidomastoid:Insertion
mastoid process
Rhomboid Minor: Insertion
medial border of scapula
Serratus Anterior: Insertion
medial border of scapula
Pectoralis Minor: Innervation
medial pectoral nerve (c8-t1)
Pectoralis Minor: Origin
ribs 3-5
Rhomboid Minor: Origin
spinous processes of C7-T1
Rhomboid Major: Origin
spinous processes of T2-T5
Subscapularis: Origin
subscapular fossa of scapula
Subscapularis: Innervation
subscapular nerve
Supraspinatus: Origin
supraspinous fossa of scapula
Levator Scapulae: Origin
transverse processes of C1-C4
