Final exam

Lateral ⅓ of clavicle; acromion and spine of scapula

Origin of Deltoid

Deltoid tuberosity of humerus

Insertion of Deltoid

Axillary nerve (C5,6)

Nerve innervation of Deltoid

flexes and medially rotates arm

Action of Anterior Deltoid

abducts arm

Action of Middle Deltoid

extends and laterally rotates arm

Action of Posterior Deltoid

Posterior surface of inferior angle of scapula

Origin of Teres Major

Medial lip of intertubercular sulcus of humerus

Insertion of Teres Major

Lower subscapular nerve (C5, 6)

Nerve innervation of Teres Major

Adducts and medially rotates arm

Action of Teres Major

Supraspinous fossa of scapula

Origin of Supraspinatus

Superior facet of greater tubercle of humerus

Insertion of Supraspinatus

Suprascapular nerve (C4-6)

Nerve innervation of Supraspinatus

initiates and assists deltoid in abduction of arm and acts with rotator cuff muscles

Action of Supraspinatus

Infraspinatus fossa of scapula

Origin of infraspinatus

Middle facet of greater tubercle of humerus

Insertion of infraspinatus

Suprascapular nerve (C5, 6)

Nerve innervation of infraspinatus

Laterally rotates arm and act with the rotator cuff muscles

Action of infraspinatus

Middle part of the lateral border of scapula

Origin of Teres minor

Inferior facet of greater tubercle of humerus

Insertion Teres minor

Axillary nerve (C5, 6)

Nerve innervation Teres minor

Laterally rotates arm and acts with rotator cuff muscles

Action Teres minor

Subscapular fossa

Origin of subscapularis

Lesser tubercle of humerus

Insertion of subscapularis

Upper and lower subscapular nerves (C5-7)

Nerve innervation of subscapularis

Medially rotates arm; as part of rotator stuff, helps hold head of humerus in glenoid cavity

Action of subscapularis

tip of coracoid process of scapula

Origin of Biceps brachii short head

supraglenoid tubercle of scapula

Origin of Biceps brachii long head

Tuberosity of radius and fascia of forearm via bicipital aponeurosis

Insertion of Biceps brachii

Musculocutaneous nerve (C5-7)

Nerve innervation of biceps brachii

Supinates forearm and when it is supine flexes forearm, short head resists dislocation of shoulder

Action of biceps brachii

Distal 1/2 of anterior surface of humerus

Origin of Brachialis

Coronoid process and tuberosity

Insertion of of Brachialis

Musculocutaneous nerve (C5-6) and radial nerve (C5, C7)

Nerve innervation of Brachialis

Flexes forearm in all positions

Action of Brachialis

Tip of coracoid process of scapula

Origin of Coracobrachialis

Middle 1/3 of medial surface of humerus

Insertion of Coracobrachialis

Musculocutaneous nerve (C5-7)

Nerve innervation of Coracobrachialis

Helps flex and adduct arm; resists dislocation of shoulder

Action of Coracobrachialis

Proximal 2/3 of supra-epicondylar ridge of humerus

Origin of Brachioradialis

Lateral surface of distal end of radius proximal to styloid process

Insertion of Brachioradialis

Radial nerve (C5-7)

Nerve innervation of Brachioradialis

Relatively weak flexion of forearm; maximal when forearm is is mid pronated position

Action of Brachioradialis

infraglenoid tubercle of scapula

Origin of Triceps brachii long head

posterior surface of humerus, inferior to radial groove

Origin of Triceps brachii lateral head

posterior surface of humerus, inferior to radial groove

Origin of Triceps brachii medial head

Proximal end of olecranon of ulna and fascia of forearm

Insertion of Triceps brachii

Radial nerve (C6-8)

Nerve innervation of Triceps brachii

Chief extensor of forearm; long head resists dislocation of humerus; especially important during adduction

Action of Triceps brachii

Lateral epicondyle of humerus

Origin of Anconeus

Lateral surface of olecranon and superior part posterior surface of ulna

Insertion of Anconeus

Radial nerve (C7, C8, T1)

Nerve innervation of Anconeus

Assists triceps in extending forearm; stabilize elbow joint; may abduct ulna during pronation

Action of Anconeus

What is 5?

triceps brachii

What is 7?

subclavius

What is 12?

coracobrachialis

What is 6?

pectoralis minor

What is 16?

biceps brachii

What is 17?

brachialis

What is 26?

extensor carpi radialis longus

What is 25?

brachioradialis

What is 21?

infraspinatus

What is 22?

teres major

What is 32?

greater tubercle of humerus

What are 3?

rhomboid minor

What is 4?

rhomboid major

What is 4?

subscapularis

What is 1?

supraspinatus

What is 13?

medial border of the scapula

What’s 8?

teres major

What is 9?

coracoid process

What is 3?

long head of biceps

What is 4?

short head of bicep

What is 2?

triceps brachii lateral head

What is 10?

pronator teres

What is 8?

infraspinatus

What is 10?

teres major

What is 9

teres minor

What is 1?

medial head of triceps

What is 2?

lateral head of triceps

What is 3?

long head of triceps

What is 1?

PT (pronator teres)

What is 2?

FCR (flexor carpi radialis)

What is 3?

PL (Palmaris longus)

What is 4?

FCU (flexor carpi ulnaris)

What is 5?

FDS (flexor digitorum superficialis)

What is 6?

FDP (Flexor digitorum profundus)

What is 7?

FPL (flexor pollicis longus)

What is 8?

PQ (pronator quadratus)

What is 16?

APB (adductor pollicis brevis)

What is 10?

palmar aponeurosis

What is 20?

FDMB (flexor digiti minimi brevis)

What is 22?

palmaris brevis

What is 18?

lumbricals

What is 2?

anconeus

What is 4?

ECRL (extensor carpi radialis longus)

What is 5?

ECRB (extensor carpi radialis brevis)

What is 6?

ED (extensor digitorum)

What is 7?

EDM (extensor digiti minimi)