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Flexors/Extensors

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
Originate above, or proximal to, the wrist joint and assist in wrist function but primary function is fingers and thumb function   show
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Smaller muscles that originate within the hand (at or distal to the carpal bones). Can be subdivided into the thenar, hypothenar, and deep palm muscles   show
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show Carpal Tunnel Syndrome  
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show Colles’ Fracture  
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Fall on the back of the hand fracture   show
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Compression of the median nerve   show
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Inflammation of the sheath of the extensor pollicis brevis and abductor pollicis longus   show
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True of False? Ulna does not rotate   show
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True of False? Radius moves around the ulna   show
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show The humerus and forearm are not aligned in a perfectly straight line, they actually form a slight lateral angle at the joint  
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show This is because the trochlea is lower than the capitulum at the distal end of the humerus.  
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Three bony landmarks of the Scapula?   show
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show 1. Trochlea (articulates with the ulna) 2. Capitulum (articulates with the radius) 3. Medial and lateral epicondyle 4. Lateral supracondylar ridge 5.Olecranon fossa (posterior – articulates with the ulna)  
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Three bony landmarks of the Radius?   show
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1. Between radius and ulna 2. Keeps the two bones from separating 3. Provides more surface area for muscles attachment   show
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show O – Distal half of the humerus, anterior surface I – Coronoid process and ulnar tuberosity of the ulna A – Elbow flexion  
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Biceps Brachii   show
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show O– Lateral supracondylar ridge on the humerus I - Styloid process of the radius A- Elbow flexion  
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show O – 1. Long head – Infraglenoid tubercle of the scapula 2. Lateral head – inferior to greater tubercle on the posterior humerus 3. Medial head – Posterior humerus I – Olecranon process of the ulna A – Elbow extension  
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show O – Medial epicondyle of the humerus and coronoid process of the ulna I – Lateral aspect of the radius A – Pronation of forearm and assists with elbow flexion  
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Pronator Quadratus Muscle   show
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show O – Lateral epicondyle of humerus and adjacent ulna I – Anterior surface of the proximal radius A – Supination of forearm  
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Lateral epicondylitis/ Tennis Elbow   show
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show Affects the common flexor tendon that inserts medial epicondyle of the humerus  
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show Biceps Brachii, Brachialis, Brachioradialis  
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show Triceps  
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show Pronator Teres and Quadratus  
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Supination Muscles?   show
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show 1.Wrist flexion 2. Wrist extension 3. Ulnar deviation 4. Radial deviation  
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show 3 muscles: 1. Flexor carpi radialis 2. Flexor carpi ulnaris 3. Palmaris longus  
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Flexor Carpi Radialis   show
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show O: Medial epicondyle of humerus I: Palmar fascia A: Wrist flexion  
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show O: Medial epicondyle of humerus I: Pisiform, and base of 5th Metacarpal A: Wrist flexion and ulnar deviation  
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show 3 muscles: 1. Extensor carpi radialis longus 2. Extensor carpi radialis brevis 3. Extensor carpi ulnaris  
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show O: Supracondylar ridge of humerus I: Base of 2nd metacarpal bone A: Wrist extension and radial deviation  
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show O: Lateral epicondyle of humerus I: Base of 3rd metacarpal A: Wrist extension  
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Extensor Carpi Ulnaris   show
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CANCEL OUT : FLEXION   show
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show EXTENSOR CARPI ULNARIS EXTENSOR CARPI RADIALIS LONGUS  
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CANCEL OUT : ULNAR DEVIATION   show
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CANCEL OUT : RADIAL DEVIATION   show
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