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Forearm muscles

Bone muscule and ligaments

QuestionAnswer
Triceps Brachii Long Head origin? Infraglenoid tubercle
Triceps Brachii Lateral Head origin? Proximal 1/3 of posterolateral aspect of humerus
Triceps Brachii Medial Head origin? Distal 2/3 posterolateral humerus
Triceps Brachii Insertion? Olecranon process of ulna
Triceps Brachii Action? All heads extend elbow Long head- extension, horiz abducts and adducts shoulder
Triceps Brachii Innervation? Radial nerve
Anconeus origin? Posterior lateral epicondyle
Anconeus Insertion? Lateral olecranon process
Anconeus Action? Extension
Anconeus Innervation? Radial nerve
Supinator Origin? Lateral epicondyle of humerus, radial collateral ligament of elbow, annular ligament of radius, supinator crest of unla
Supinator Insertion? Lateral anterior proximal radius
Supinator Action? Supination
Supinator Innervation? Radial nerve
Pronator Teres Humeral head Origin? Common flexor tendon from medial epicondyle
Pronator Teres Ulnar head Origin? Coronoid process
Pronator Teres Insertion? Lateral radius
Pronator Teres Action? Pronation of forearm and elbow flexion
Pronator Teres Innervation? Median nerve
Pronator Quadratus Origin? Distal anterior ulna
Pronator Quadratus insertion? Distal anterior radius
Pronator Quadratus Action? Pronation
Pronator Quadrants Invervation? Median nerve
Brachioradialis Origin? Proximal 2/3 of lateral supracondylar ridge
Brachioradialis Insertion? Lateral side of base of styloid process of the radius
Brachioradialis Action? -Flexion at elbow -Supination of the forearm
Brachioradialis Innervation? Radial nerve
Flexor Carpi Radialis Origin? Medial epicondyle of the Humerus
Flexor Carpi Radialis Insertion? Palmar aspect of the 2nd Metacarpal
Flexor Carpi Radialis Action? -Flexion at wrist -Radial deviation at wrist
Flexor Carpi Radialis Innervation? Median nerve
Flexor Carpi Ulnaris Origin? Common flexor tendon of the HUmerus
Flexor Carpi Ulnaris Insertion? Pisiform, hook of the hamate and the 5th metacarpal
Flexor Carpi Ulnaris Action? -Flexes the wrist with other flexors -Ulnar deviation
Flexor Carpi Ulnaris Innervation? Ulnar Nerve
Palmaris Longus Origin? Medial epicondyle of the humerus
Palmaris Longus Insertion? palmar aponeurosis leading into the 2-5 metaphalanges
Palmaris Longus Action? Flexes wrist
Palmaris Longus Innervation? median Nerve
Flexor Digitorum Superficialis Origin? Medial epicondyle of th ehumerus and the coracoid process
Flexor Digitorum Superficialis Insertion Middle Phalanges 2-5
Flexor Digitorum Superficialis Action Flexes the middle proximal and at the metacarpophalangeal joint
Flexor Digitorum Superficialis Innervation Median nerve
Flexor Digitorum Profundus Origin? Medial 3/4 anterior surface of the ulna
Flexor Digitorum Profundus Insertion Distal phalanges 2-5 digits
Flexor Digitorum Profundus Action Flexes the distal phalanges at the interphalangeal joint
Flexor Digitorum Profundus Innervation Median nerve (2-3 digiti) Ulnar nerve (4-5 digiti)
Does the Palmaris Longus go under Flexor retinaculum? No It does not
Extensior Carpi Radialis Brevis Origin? Lateral epicondyle ridge of the humerus
Extensior Carpi Radialis Brevis Insertion? Base of 3rd metacarpal
Extensior Carpi Radialis Brevis Action? -Extends the wrist -radial deviation
Extensior Carpi Radialis Brevis Innervation? Radial nerve
Extensor Carpi Radialis Longus Origin? Lateral epicondyle of the humerus
Extensor Carpi Radialis Longus Insertion? Base of the 2nd metacarpal
Extensor Carpi Radialis Longus Action? -Extends the wrist -Radial deviation
Extensor Carpi Radialis Longus Innervation? Radial nerve
Extensor Digitorum Communis origin? Lateral epicondyle of the humerus
Extensor Digitorum Communis Insertion? 2-5 Medial expansion of the digits
Extensor Digitorum Communis Action? -Extension at the wrist -Extends the 4 finger
Extensor Digitorum Communis Innervation? Radial nerve
Extensor Carpi Ulnaris Origin? Lateral epicondyle of the humerus
Extensor Carpi Ulnaris Insertion? Base of the 5th Metacarpal
Extensor Carpi Ulnaris Action? -Extends the wrist -Ulnar deviation
Extensor Carpi Ulnaris Innervation? Radial nerve
Extensor pollicis brevis Origin? Posterior radius
Extensor pollicis brevis Insertion? Proximal phalanx of the thumb
Extensor pollicis brevis Action? Extends and abducts the thumb
Extensor pollicis brevis Nerve? -Radial Nerve
Extensor Digiti Minimi Origin? Lateral epicondyle of the humerus
Extensor Digiti Minimi Insertion? 5th digit (minimi)
Extensor Digiti Minimi Action? Extends the 5th digit
Extensor Digiti Minimi Innervation? Radial Nerve
What radioulnar joints supinate? Bicep Brachii and Supinator
What radioulnar joints pronate? Pronator Teres and Pronator Quadratus
Created by: rmart11
 

 



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