Shoulder muscles

biceps brachii action?

Shoulder flexion (weak)
-Elbow flexion
-supination

biceps brachii insertion?

radial tuberosity

biceps brachii nerve?

musculocutaneous n.

biceps brachii origin?

Glenoid (long head)
-Coracoid (short head)

Coracobrachialis action?

Flexion
-Horizontal adduction

Coracobrachialis insertion?

medial 1/3 of humerus

Coracobrachialis nerve?

musculocutaneous n.

Coracobrachialis origin?

Coracoid process

deltoid action?

Flexion (ant.)
-Abduction (mid.)
-Extension (post.)

deltoid insertion?

deltoid tuberosity

deltoid nerve?

Axillary n.

deltoid origin?

scapula
-clavicle

Infraspinatus (RC) action?

external rotation

Infraspinatus (RC) insertion?

greater tubercle

Infraspinatus (RC) nerve?

suprascapular n.

Infraspinatus (RC) origin?

infraspinous fossa

latissiumus dorsi action?

Extension
-Adduction
-Internal Rotation

latissiumus dorsi insertion?

lesser tubercle

latissiumus dorsi nerve?

thoracodorsal n.

latissiumus dorsi origin?

thoracolumbar fascia
-thoracic vertebrae
-lumbar vertebrae

levator scapulae action?

Scapular elevation
-Neck extension

levator scapulae insertion?

Superior/medial portion of scapula

levator scapulae nerve?

Nerve roots C2-C4

levator scapulae origin?

Transverse process of C1-C4

pectoralis major action?

Adduction
-Horizontal adduction
-Flexion

pectoralis major insertion?

lesser tubercle

pectoralis major nerve?

medial and lateral pectoral n.

pectoralis major origin?

Clavicle
-Sternum
-Ribs

pectoralis minor action?

Protraction of scapula

pectoralis minor insertion?

Coracoid Process

pectoralis minor nerve?

medial pectoral n.

pectoralis minor origin?

Ribs (3-5)

rhomboid major action?

Scapular retraction

rhomboid major insertion?

medial border of scapula

rhomboid major nerve?

dorsal scapular n.

rhomboid major origin?

T2-T5

rhomboid minor action?

scapular retraction

rhomboid minor insertion?

medial border of scapula

rhomboid minor nerve?

dorsal scapular n.

rhomboid minor origin?

C7-T1

serratus anterior action?

Scapular protraction

serratus anterior insertion?

Medial border of scapula

serratus anterior nerve?

Long thoracic

serratus anterior origin?

angles of ribs (1-8)

Subclavius action?

Depresses clavicle

Subclavius insertion?

inferior clavicle

Subclavius nerve?

Nerve to subclavius

Subclavius origin?

1st rib

subscapularis (RC) action?

internal rotation

subscapularis (RC) insertion?

lesser tubercle

subscapularis (RC) nerve?

subscapular n.

subscapularis (RC) origin?

subscapular fossa

supraspinatus (RC) action?

Abduction

supraspinatus (RC) insertion?

greater tubercle

supraspinatus (RC) nerve?

suprascapular n.

supraspinatus (RC) origin?

supraspinous fossa

teres major action?

extension
-adduction
-internal rotation

teres major insertion?

lesser tubercle

teres major nerve?

axillary n.

teres major origin?

lateral border of scapula

teres minor (RC) action?

external rotation

teres minor (RC) insertion?

greater tubercle

teres minor (RC) nerve?

axillary n.

teres minor (RC) origin?

lateral border of scapula

Triceps Brachii action?

shoulder extension (weak)
-elbow extension

Triceps Brachii insertion?

olecranon process

Triceps Brachii nerve?

radial n.

Triceps Brachii origin?

lateral border of scapula (long head)
-Posterior humerus (medial & lateral heads)

upper trapezius action?

Scapular elevation
-Neck extension

upper trapezius insertion?

Lateral 1/3 clavicle
-Acromion process

upper trapezius nerve?

spinal accessory n.

upper trapezius origin?

external occipital protuberance
-Occiput
-SP of C7