Muscles of the arms and hand.
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Triceps Brachii Origin | Infraglenoid tubercle of the scapula
Posterior upper humerus
Posterior lower humerus
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| Triceps Brachii Insertion | Olecranon process of the ulna
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| Triceps Brachii Actions | Extension of the forearm at the elbow
Extension of the humerus at the shoulder
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| Biceps Brachii Origin | Supraglenoid tubercle of the scapula
Coracoid process of the scapula.
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| Biceps Brachii Insertion | Radial tuberosity
Bicipital aponeurosis
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| Biceps Brachii Actions | Flexion of the forearm at the elbow
Supination of the forearm at the elbow
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| Anconeus Origin | Posterior, lateral epicondyle of the humerus
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| Anconeus Insertion | Posterior, proximal ulna
Olecranon process
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| Anconeus Action | Extension of the forearm at the elbow
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| Brachioradialis Origin | Lateral supracondylar ridge of the humerus
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| Brachioradialis Insertion | Radial Styloid
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| Brachioradialis Action | Flexion of the forearm at the elbow
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| Brachialis Origin | Anterior surface of the humerus
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| Brachialis Insertion | Ulnar tuberosity
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| Brachialis Action | Flexion of the forearm at the elbow
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| Supinator Origin | Lateral epicondyle of the humerus
Supinator crest of the ulna
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| Supinator Insertion | Anterior upper 1/3 of the radius
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| Supinator Action | Supinates the forearm
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| Pronator Teres Origin | Medial epicondyle of the humerus
Coronoid process of the ulna
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| Pronator Teres Insertion | Lateral aspect of the radius
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| Pronator Teres Action | Pronation of the forearm
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| Pronator Quadratus Origin | Anterior, distal ulna
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| Pronator Quadratus Insertion | Anterior distal radius
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| Pronator Quadratus Action | Pronates the forearm
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| Palmarus Longus Origin | Medial epicondyle of the humerus
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| Palmarus Longus Insertion | Palmar aponeurosis
Flexor retinaculum
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| Palmarus Longus Action | Flexion of the hand at the wrist
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| Flexor Carpi Radialis Origin | Medial Epicondyle of the humerus
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| Flexor Carpi Radialis Insertion | Anterior bases of 2nd and 3rd metacarpals
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| Flexor Carpi Radialis Actions | Flexion of the hand at the wrist
Abduction (radial deviation of the hand at the wrist.
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| Flexor Carpi Ulnaris Origin | Medial epicondyle of the humerus
Posterior, proximal ulna
Olecranon process
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| Flexor Carpi Ulnaris Insertion | Medial carpals
Base of 5th metacarpal
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| Flexor Carpi Ulnaris Action | Flexion of the hand at the wrist
Adduction (ulnar deviation) of the hand at the wrist.
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| Extensor Carpi Radialis Longus Origin | Lateral epicondyle of the humerus
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| Extensor Carpi Radialis Longus Insertion | Posterior base of 2nd metacarpal
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| Extensor Carpi Radialis Longus Action | Extension of the hand at the wrist
Abduction of the hand at the wrist
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| Extensor Carpi Radialis Brevis Origin | Lateral epicondyle of the humerus
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| Extensor Carpi Radialis Brevis Insertion | Posterior base of 3rd metacarpal
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| Extensor Carpi Radialis Brevis Action | Extension of the hand at the wrist
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| Extensor Digitorum Origin | Lateral epicondyle of the humerus
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| Extensor Digitorum Insertion | Dorsal aspect of middle phalanges of the four fingers
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| Extensor Digitorum Action | Extension of the fingers (digits)
Extension of the wrist
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| Extensor Digiti Minimi Origin | Common extensor tendon (at lateral epicondyle)
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| Extensor Digiti Minimi Insertion | Tendon of the extensor digitorum (at the little finger)
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| Extensor Digiti Minimi Action | Extension of the little finger
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| Extensor Carpi Ulnaris Origin | Lateral epicondyle of the humerus
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| Extensor Carpi Ulnaris Insertion | Posterior base of the 5th metacarpal
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| Extensor Carpi Ulnaris Action | Extension of the hand at the wrist
Adduction of the hand at the wrist
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| Flexor Digitorum Superficialis Origin | Medial epicondyle of the humerus
Upper radius
Upper ulna
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| Flexor digitorum Superficialis Insertion | Sides of the middle phalanges of the four fingers
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| Flexor digitorum Superficialis Action | Flexion of the fingers
Flexion of the hand at the wrist
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| Flexor Pollicis Longus Origin | Anterior radius
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| Flexor Pollicis Longus Insertion | Base of distal phalanx of the thumb
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| Flexor Pollicis Longus Action | Flexion of the thumb
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| Flexor Digitorum Profundus Origin | Anterior ulna
Interosseus membrane
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| Flexor Digitorum Profundus Insertion | Bases of distal phalanges of the four fingers (digits)
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| Flexor Digitorum Profundus Action | Flexion of the four fingers
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| Extensor Indicis Origin | Dorsal, distal half of the ulna
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| Extensor Indicis Insertion | Tendon of extensor digitorum at the index finger
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| Extensor Indicis Action | Extension of the index finger
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| Extensor Pollicis Longus Origin | Posterior, middle 1/3 of the ulna
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| Extensor Pollicis Longus Insertion | Distal phalanx of the thumb
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| Extensor Pollicis Longus Action | Extension of the thumb
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| Extensor Pollicis Brevis Origin | Posterior aspect of the radius
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| Extensor Pollicis Brevis Insertion | Posterior, proximal phalanx of the thumb
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| Extensor Pollicis Brevis Action | Extension of the thumb
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| Abductor Pollicis Longus Origin | Posterior aspect of the radius
Posterior aspect of the ulna
Interosseus membrane
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| Abductor Pollicis Longus Insertion | Base of 1st metacarpal
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| Abductor Pollicis Longus Action | Abduction of the thumb
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| Opponens Digiti Minimi Origin | Medial Carpal Bones
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| Opponens Digiti Minimi Insertion | Medial aspect of the 5th metacarpal
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| Opponens Digiti Minimi Action | Opposition of the 5th metacarpal
Flexion of the 5th metacarpal
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| Abductor Digiti Minimi Origin | Medial Carpal Bone
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| Abductor Digiti Minimi Insertion | Base of proximal phalanx of the little finger
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| Abductor Digiti Minimi Action | Abduction of the little finger
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| Flexor Digiti Minimi Origin | Flexor retinaculum
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| Flexor Digiti Minimi Insertion | Base of proximal phalanx of the little finger
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| Flexor Digiti Minimi Action | Flexion of the little finger
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| Flexor Pollicis Brevis Origin | Flexor retinaculum
Carpal bones
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| Flexor Pollicis Brevis Insertion | Base of proximal phalanx of the thumb
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| Flexor Pollicis Brevis Action | Flexion of the thumb
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| Abductor Pollicis Brevis Origin | Flexor retinaculum
Carpal bones
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| Abductor Pollicis Brevis Insertion | Base of proximal phalanx of the thumb
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| Abductor Pollicis Brevis Action | Abduction of the thumb
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| Adductor Pollicis Origin | Carpals Base of 3rd metacarpal
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| Adductor Pollicis Insertion | Base of proximal phalanx of the thumb
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| Adductor Pollicis Action | Adduction of the thumb
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| Opponens Pollicis Origin | Flexor retinaculum
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| Opponens Pollicis Insertion | Lateral aspect of 1st metacarpal (thumb)
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| Opponens Pollicis Action | Opposition of the thumb
Flexion of the thumb
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| Palmar Interossei Origin | Sides of 2nd, 4th, and 5th metacarpals
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| Palmar Interossei Insertion | Bases of proximal phalanges of respective digits
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| Palmar Interossei Action | Adducts the digits toward the middle finger
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| Dorsal Interossei Origin | Between the metacarpals
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| Dorsal Interossei Insertion | Bases of proximal phalanges of 2nd, 3rd, and 4th digits
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| Dorsal Interossei Action | Abduction of 2nd, 3rd, and 4th digits
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| Lumbricals Origin | Tendon of flexor digitorum profundus
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| Lumbricals Insertion | Radial side; bases of proximal phalanges of the 4 fingers
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| Lumbricals Action | Extension of the fingers
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Created by:
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