action and innervation of shoulder

R Major

A

N

retracts scapula

dorsal scapular N

R Minor

RETRACTS SCAPULA

dorsal scapular N

levator scapulae

retracts scapula

dorsal scapular N

Serratus anterior

elevates ribs

medial pectoral N

Trapezius

Accessory N

Extends and laterally

flexes

neck

Deltoid

axillary N

flexes shoulder

Latissimus dorsi

Thoracodorsal N

extends shoulder

Pectoralis major

Medial and lateral

pectoral N

extends shoulder or flexes shoulder

Teres major

Lower subscapular N

Extends shoulder;

Coracobrachialis

Musculocutaneous N

flexes shoulder

Supraspinatus

Suprascapular N

'

holds

head

of humerus in place

Infraspinatus

Suprascapular N

holds head of

humerus in place

Teres minor

Axillary N

holds

head of humerus in

place

Subscapularis

holds head of

humerus in place

Upper and lower

subscapular

Biceps brachii

Musculocutaneous N

flexes elbow

Brachialis

Musculocutaneous

and radial N

Flexes elbow

Triceps brachii

Radial N

Extends elbow;

Serratus posterior

inferior

9th to 11th

intercostal and

subcostal N

depresses inferior ribs

External intercostal

intercostal N

Quiet inhalation elevates

ribs

Brachioradialis m.

Radial N

Flexes elbow

Extensor carpi radialis longus m

Radial N

Extends

wrist

pronator teres

Median N

Pronates forearm