1/3 Origin, Insertion, Action, Innervation

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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


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