MOINA upper ex

Pectorals major origin

sternal end of the clavicle, ribs 1-6

Pectorals major insertion

Greater tubercle of humerus

Pectoralis major nerve supply

Medial and lateral pectoral nerve from brachial plexus

Pectoralis major action

Flexes arm at shoulder, rotates arm medially, adducts arm

What muscle is this?

Pectoralis major

Pectoralis minor origin

Ribs 3-5

Pectoralis minor insertion

Coracoid process of scapula

Pectoralis minor nerve supply

Medial pectoral nerve from brachial plexus

Pectoralis minor action

Depresses scapula, downwardly rotates scapula

What muscle is this?

Pectoralis minor

Subclavius origin

1st costal cartilage

Subclavius insertion

Clavicle

Subclavius nerve supply.

Nerve to subclavius from upper trunk of brachial plexus

Subclavius action

Depresses clavicle and steadies this bone during movement of shoulder girdle

What muscle is this?

Subclavius

Serratus anterior origin

Ribs 1-9

Serratus anterior insertion

Medial border and inferior angle of scapula

Serratus anterior nerve supply

Long thoracic nerve

Serratus anterior action

Rotates inferior angle of scapula

What muscle is this?

Serratus anterior

Deltoid origin

Lateral 1/3 of clavicle, spine of scapula, acromion process of scapula

Deltoid insertion

Middle of lateral surface of shaft of humerus

Deltoid nerve supply

axillary nerve

Deltoid action

Abducts, internal and external rotates arm, anterior fiber flex, posterior fiber extend

What muscle is this?

Deltoid

Supraspinatus origin

Supraspinous fossa of scapula

Supraspinatus insertion

Greater tuberosity of the humerus; capsule of shoulder joint

Supraspinatus nerve supply

Suprascapular nerve

Supraspinatus action

Abducts arm, stabilizes shoulder joint

What is this muscle?

Supraspiratus

Infraspinatus origin

infraspinous fossa of the scapula

Intraspinatus insertion

Greater tuberosity of the humerus; capsule of the shoulder joint

Infraspinatus nerve supply

Suprascapular nerve

Infraspinatus action

external rotates arm, stabilizes shoulder joint

What muscle is this?

Infraspinatus

Teres minor origin

Upper 2/3rds of lateral border of scapula

Teres minor insertion

Greater tuberosity of the humerus; capsule of shoulder joint

Teres minor nerve supply

Axillary nerve

teres minor action

external rotates arm, stabilizes shoulder joint

What is this muscle?

Teres minor

Teres major origin

Lower 1/3rd of lateral border of scapula

Teres major insertion

Medial lip of bicipital groove of humerus

Teres major nerve supply

Lower subscapular nerve

teres major action

adducts, internal rotates arm, stabilizes shoulder joint

What muscle is this?

Subscapularis origin

Subscapular fossa

subscapularis insertion

lesser tuberosity of humerus

subscapularis nerve supply

upper and lower subscapular nerve

subscapularis action

internal rotates arm, stabilizes shoulder joint

what muscle is this?

Subscapularis

biceps brachii origin

supraglenoid tubercle of the scapula, coracoid process of scapula

biceps brachii insertion

tuberosity of radius and bicipital aponeurosis into deep fascia of forearm

biceps brachii nerve supply

musculocutaneous nerve

biceps brachii action

supinates forearm, flexor of elbow joint; weak flexor of shoulder joint

What muscle is this?

biceps brachii

coracobrachialis origin

coracoid process of the scapula

coracobrachialis insertion

medial aspect of shaft of humerus

coracobrachialis nerve supply

musculocutaneous nerve

coracobrachialis action

flexes arm, weak adductor of arm

what muscle is this?

coracobrachialis

brachialis origin

front of lower half of humerus

brachialis insertion

coronoid process of ulna

brachialis nerve supply

musculocutaneous nerve

brachialis action

flexor of elbow joint

what muscle is this?

brachialis

triceps brachii origin

infraglenoid tubercle of the scapula, upper half and lower half of posterior surface of shaft of humerus

triceps brachii insertion

olecranon process of the ulna

triceps brachii nerve supply

radial nerve

triceps brachii action

extensor of elbow joint

what muscle is this

triceps brachii

pronator teres origin

medial epicondyle of humerus, medial border of coronoid process of ulna

pronator teres insertion

lateral aspect of shaft of radius

pronator teres nerve supply

median nerve

pronator teres action

pronation and flexion of fa, flexes and abducts hand at wrist joint

what muscle is this?

pronator teres

flexor carpi radialis origin

medial epicondyle of humerus

flexor carpi radialis insertion

bases of 2nd & 3rd MC bones

flexor carpi radialis nerve supply

median nerve

flexor carpi radialis action

flexes hand

what muscle is this

flexor carpi radialis

palmaris longus origin

medial epicondyle of humerus

palmaris longus inserion

flexor retinaculum, palmar aponeurosis

palmaris longus nerve supply

median nerve

palmaris longus action

flexes and adducts hand at wrist joint

what muscle is this?

palmaris longus

flexor carpi ulnaris origin

medial epicondyle of humerus, medial aspect of olecranon process, posterior border of ulna

flexor carpi ulnaris insertion

pisiform bone, hook of the hamate, base at 5th MC bone

flexor carpi ulnaris nerve supply

ulnar nerve

flexor carpi ulnaris action

flexes and adducts hand at wrist joint

what muscle is this?

flexor carpi ulnaris

flexor digitorum superficialis origin

medial epicondyle of humerus, medial border of coronoid process of ulna, oblique line on anterior surface of shaft of radius

flexor digitorum superficialis insertion

middle phalanx of medial four finger

flexor digitorum superficialis nerve supply

median nerve

flexor digitorum supercialis action

flexes middle phalanx of fingers, assissts flexing proximal phalanx & hand

what muscle is this

flexor digitorum superficialis

flexor pollicis longus origin

anterior surface of shaft of radius

flexor pollicis longus insertion

distal phalanx of thumsb

flexor pollicis longus nerve supply

anterior interosseous branch of median nerve

flexor pollicis longus action

flexes distal phalanx of thumb

what muscle is this?

flexor pollicis longus