PHT 500 UE Muscles

Origin of Upper Trapezius

occipital protuberance, medial superior nuchal line, ligamentum nuchae

Insertion of Upper Trapezius

Posterior lateral 1/3 of clavicle

Action of Upper Trapezius

elevation of scapula, upward rotation of scapula, opposite side neck rotation, lat flex neck same side, (B) ext neck

Nerve of all parts of Trapezius

Cranial nerve XI

Origin of Middle Trapezius

spinous process of C7-T6

Insertion of Middle Trapezius

superior spine of scapula

action of middle trapezius

adducts scapula

Origin of Lower Trapezius

Spinous processes of T6-T12

Insertion of Lower Trapezius

Root of spine of scapula

action of lower trapezius

Scapular depression and upward rotation

origin of latissimus dorsi

T6-T12, lumbar and sacral vertebrae, posterior illiac crest, ribs 9-12, inferior angle of scapula

insertion of latissimus dorsi

intertubercular groove of humerus

action of latissimus dorsi

extends, adducts, and medially rotates humerus

nerve/myotome of latissimus dorsi

Thoracodorsal nerve C6,C7

origin of rhomboid major

spinous processes of T2-T5

insertion of rhomboid major

lower half of verterbral boarder of scapula

action of rhomboid major

adduction, downward rotation, and slight elevation of scapula

Nerve/Myotome for rhomboid major

Dorsal scapular nerve C5

Origin for Rhomboid Minor

spinous processes of C7-T1

insertion for rhomboid minor

medial border of scapula superior to spine

action for rhomboid minor

adduction of scap, down rot/ele of scap also

Nerve/Myotome for rhomboid minor

Dorsal Scapular nerve C5

origin of levator scapulae

transverse processes of C1-C4

insertion of levator scapulae

superior angle of scapula

action of levator scapulae

elevates and downwardly rotates scapula, lateral flexion of neck, rotates neck same side

Nerve/Myotome for levator scapulae

Dorsal Scapular Nerve C5

origin of pectoralis major

anteriomedial clavicle, sternum to rib 7, aponeurosis of the external obliques

insertion of pectoralis major

crest of greater tubercle of humerus

action of pectoralis major

adduction, medial rotates, horizontal adduction

clavicular fibers flex shoulder

sternal fibers extend shoulder when shoulder is in flexion

Nerve/Myotome of pectoralis major

Clavicular head - lateral pectoral nerves C6

Sternal head - medial and lateral pectoral nerves C7,C8

Origin of pectoralis minor

ribs 3-5

insertion of pectoralis minor

coracoid process

action of pectoralis minor

depression, anterior tilt, downward rotation, and protraction of scapula

Nerve/Myotome of pectoralis minor

Medial pectoral nerve C8,T1

origin of subclavuis

1st rib

insertion of subclavius

inferior clavicle

action of subclavius

moves shoulder downward and anterior by action of the clavicle

Nerve/Myotome of subclavius

nerve to subclavian C5

origin of serratus anterior

ribs 1-8

insertion of serratus anterior

ventral, vertebral border of the scapula

action of serratus anterior

protraction and upward rotation of scapula

Nerve/Myotome of serratus anterior

Long Thoracic Nerve C6 C7

origin of supraspinatus

medial 1/2 of suprapsinatus fossa

insertion of supraspinatus

uppermost greater tubercle

action of suprapsinatus

initiates ABD, lateral rotation, holds humerus down

Nerve/Myotome of supraspinatus

Suprascapular nerve C5

origin of infraspinatus

infraspinous fossa of scapula

insertion of infraspinatus

middle greater tubercle

action of infraspinatus

lateral rotation of arm

Nerve/Myotome of infraspinatus

suprascapular never C5

origin of teres minor

superior 2/3 of axillary border of scapula

insertion of teres minor

distal greater tubercle

action of teres minor

ER

Nerve/Myotome of teres minor

axillary nerve C5

origin of subscapularis

subscapular fossa

insertion of subscapularis

lesser tubercle of humerus

action of subscapularis

IR and adduction of shoulder

Nerve/Myotome of subscapularis

upper and lower subscapular nerve C6

origin of teres major

inferior 1/3 of axillary border of scapula

insertion of teres major

crest of lesser tubercle of humerus

action of teres major

ext, add, IR

Nerve/Myotome of teres major

Lower subscapular nerve C6

origin of anterior deltoid

lateral 1/3 of clavicle

origin of middle deltoid

acromion process

origin of posterior deltoid

lateral 1/3 of spine of scapula

insertion of deltoids

deltoid tuberosity

action of anterior deltoid

flex, IR, when contracting with posterior - ABD

action of middle deltoid

ABD, flex of shoulder

action of posterior deltoid

ext, ER, horz abd, when contracting with anterior deltoid - ABD

Nerve/Myotome of deltoids

Axillary C5

origin of coracobrachialis

coracoid process

insertion of coracobrachialis

medial surface of humerus

action of coracobrachialis

flexes and adducts arm

Nerve/Myotome of coracobrachialis

Musculocutaneous nerve C6

origin of biceps brachii short head

coracoid process of scapula

origin of biceps brachii long head

supraglenoid tubercle of scapula

insertion of biceps brachii

radial tuberosity

action of biceps brachii

elbow and shoulder flexion, supination

Nerve/Myotome of biceps brachii

Musculocutaneous nerve C6

origin of brachialis

Distal half of anterior surface of humerus

insertion of brachialis

coronoid process of ulna

action of brachialis

elbow flexion

Nerve/Myotome of brachialis

musculocutaneous nerve C6

origin of triceps long head

infraglenoid tubercle

origin of triceps medial head

posterior medial surface of distal 1/3 of humerus

origin of triceps lateral head

proximal anterior 1/2 of humerus

insertion of triceps brachii

olecranon process of ulna

Action of Tricpes Brachii

elbow extension

long head - shoulder extension

Nerve/Myotome of triceps brachii

Radial nerve C7 C8

origin of pronator teres humeral head

medial epicondyle and medial inter muscular septum

origin of pronator teres ulnar head

medial side of coronoid process of ulna

insertion of pronator teres

middle of lateral surface of radius

action of pronator teres

pronates forearm

Nerve/Myotome of pronator teres

median nerve proper C7

origin of palmaris longus

medial epicondyle and medal intermuscular septum via the common flexor tendon

insertion of palmaris longus

palmar aponeurosis

action of palmaris longus

flexes wrist

Nerve/Myotome of palmaris longus

median nerve proper C7 C8

origin of flexor carpi radialis

medial epicondyle and medial intermuscular septum via the common flexor tendon

insertion of flexor carpi radialis

base of 2nd and 3rd metacarpals