A&P Exam 3 Upper Limb Muscles

Deltoid action

Abduct shoulder; flex and extend shoulder; medially and laterally rotate arm

Deltoid origin

Clavicle; acromion; spine of scapula

Deltoid insertion

Deltoid tuberosity

Deltoid innervation

Axillary nerve

Supraspinatus action

Abduct shoulder

Supraspinatus origin

Supraspinous fossa

Supraspinatus insertion

Greater tubercle

Supraspinatus innervation

Suprascapular nerve

Infraspinatus action

Extend and adduct shoulder

Infraspinatus origin

Infraspinous fossa

Infraspinatus insertion

Greater tubercle

Infraspinatus innervation

Suprascapular nerve

Coracobrachialis action

Flex and adduct shoulder

Coracobrachialis innervation

Musculocutaneous nerve

Subscapularis action

Medially rotate arm

Subscapularis origin

Subscapular fossa

Subscapularis insertion

Lesser tubercle

Subscapularis innervation

Subscapular nerve

Teres major action

Extend and adduct shoulder

Teres major origin

Posterior surface of scapula

Teres major insertion

Intertubercular sulcus of humerus

Teres major innervation

Subscapular nerve

Teres minor action

Extend and adduct shoulder

Teres minor origin

Lateral border of scapula

Teres minor insertion

Greater tubercle

Teres minor innervation

Axillary nerve

Biceps brachii action

Flex elbow; supinate forearm

Biceps brachii origin

Coracoid process and supraglenoid tubercle

Biceps brachii insertion

Radial tuberosity

Biceps brachii innervation

Musculocutaneous nerve

Brachialis action

Flex elbow

Brachialis origin

Anterior surface of distal humerus

Brachialis insertion

Coronoid process of ulna

Brachialis innervation

Musculocutaneous nerve

Triceps brachii action

Extend elbow

Triceps brachii origin

Infraglenoid tubercle; posterior shaft of humerus; distal radial groove

Triceps brachii insertion

Olecranon

Triceps brachii innervation

Radial nerve

Brachiioradialis action

Flex elbow

Brachiioradialis innervation

Radial nerve

Pronator quadratus action

Pronate forearm

Pronator quadratus origin

Distal portion of anterior ulna sgaft

Pronator quadratis insertion

Distal surface of anterior radius

Pronator quadratus innervation

Median nerve

Pronator teres action

Pronate forearm

Pronator teres origin

Medial epicondyle of humerus; coronoid process of ulna

Pronator teres insertion

Lateral radius

Pronator teres innervation

Median nerve

Supinator action

Supinate forearm

Supinator origin

Lateral epicondyle of humerus; proximal ulna

Supinator insertion

Proximal end of radius

Supinator innervation

Radial nerve

Flexor carpi radialis action

Flex and abduct wrist

Flexor carpi radialis origin

Medial epicondyle of humerus

Flexor carpi radialis insertion

Base of 2^nd and 3^rd metacarpals

Flexor carpi radialis innervation

Median nerve

Flexor carpi ulnaris action

Flex and adduct wrist

Flexor carpi ulnaris origin

Medial epicondyle; olecranon; posterior surface of ulna

Flexor carpi ulnaris insertion

Pisiform and hamate bones; base of 5^th metacarpal

Flexor carpi ulnaris innervation

Ulnar nerve

Extensor carpi radialis brevis action

Extend and abduct wrist

Extensor carpi radialis brevis origin

Lateral epicondyle of humerus

Extensor carpi radialis brevis insertion

Base of 3rd metacarpal

Extensor carpi radialis brevis innervation

Radial nerve

Extensor carpi radialis longus action

Extend and abduct wrist

Extensor carpi radialis longus origin

Lateral supracondylar ridge of humerus

Extensor carpi radialis longus insertion

Base of 2nd metacarpal

Extensor carpi radialis longus innervation

Radial nerve

Extensor carpi ulnaris action

Extend and adduct wrist

Extensor carpi ulnaris origin

Lateral epicondyle of humerus; posterior border of ulna

Extensor carpi ulnaris insertion

Base of 5th metacarpal

Extensor carpi ulnaris innervation

Radial nerve

Palmaris longus action

Flex wrist

Palmaris longus innervation

Median nerve

Flexor digitorum profundus action

Flex wrist and fingers

Flexor digitorum profundus innervation

Median and ulnar nerve

Flexor digitorum superficialis action

Flex wrist and fingers 2-5

Flexor digitorum superficialis innervation

Median nerve

Extensor digitorum action

Extend fingers and wrist

Extensor digitorum origin

Lateral epicondyle of humerus

Extensor digitorum insertion

Phalanges of fingers 2-5

Extensor digitorum innervation

Radial nerve

Flexor pollicis brevis action

Flex thumb

Flexor pollicis brevis innervation

Median and ulnar nerve

Flexor pollicis longus action

Flex thumb

Flexor pollicis longus innervation

Median nerve

Extensor pollicis brevis action

Extend thumb

Extensor pollicis brevis innervation

Radial nerve

Extensor pollicis longus action

Extend thumb

Extensor pollicis longus innervation

Radial nerve

Abductor pollicis brevis action

Abduct thumb

Abductor pollicis brevis innervation

Median nerve

Abductor pollicis longus action

Abduct and extend thumb; abduct wrist

Abductor pollicis longus innervation

Radial nerve