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versions of Muscle Origins, Insertions, Actions, & Innervations (Arm, Elbow, Forearm, and Hand):
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Muscle Origins, Insertions, Actions, & Innervations (Arm, Elbow, Forearm, and Hand)
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Elbow Muscles Innervated by the Musculocutaneous Nerve
Question | Answer | Column 3 | Column 4 | Column 5 |
Biceps Brachi | Coracoid process and tubercle above glenoid cavity. | Radial tuberosity | Elbow flexion, forearm supination | Musculocutaneous Nerve |
Brachialis | Anterior shaft of humerus | Coronoid process of Ulna | Elbow flexion | Musculocutaneous Nerve |
| | | | memorize |
Elbow Muscles Innervated by the Radial Nerve
Question | Answer | Column 3 | Column 4 | Column 5 |
Brachioradialis | Distal lateral end of humerus | Lateral surface of proximal and distal end of radius | Elbow flexion | Radial Nerve |
Triceps | tubercle below glenoid cavity, lateral & medial surfaces of humerus | Olecranon process of ulna | Elbow extension | Radial Nerve |
Anconeus | Lateral epicondyle | Olecranon fossa | Assists elbow extension | Radial Nerve C6, C7 |
Supinator | Lateral epicondyle of humerus and crest of ulna | lateral surface of radius | Forearm supination | Radial Nerve |
| | | | memorize |
Wrist Muscles Innervated by the Radial Nerve
Question | Answer | Column 3 | Column 4 | Column 5 |
Extensor Carpi Radialis Longus | distal end of humerus | Base of 2nd metacarpal | Wrist extension,abducts hand at wrist | Radial Nerve C6, C7 |
Extensor Carpi Radialis Brevis | Lateral epicondyle | Base of 3rd metacarpal | Wrist extension and abducts hand at wrist. | Radial Nerve |
Extensor Carpi Ulnaris | Lateral epicondyle | Base of 5th metacarpal | Wrist extension, adducts hand at wrist | Radial Nerve |
| | | | memorize |
Finger Muscles Innervated by the Radial Nerve
Question | Answer | Column 3 | Column 4 | Column 5 |
Extensor Digitorum | Lateral epicondyle | Distal phalanx of 2 -5 fingers | Extends all joints of fingers | Radial Nerve C6, C7, C8 |
Extensor Indicis | Distal ulna | Distal phalanx of 2 finger | Extends all joints on 2 finger | Radial Nerve C6, C7, C8 |
Extensor Digiti Minimi | Lateral epicondyle | Distal phalanx of 5 finger | Extends all joints of 5 finger | Radial Nerve C6, C7,C8 |
Abductor Pollicis Longus | Radius, interosseous membrane, ulna | first metacarpal | Abducts thumb | Radial Nerve C6, C7 |
Extensor Pollicis Brevis | Posterior distal radius | Proximal phalanx of thumb | Extends MP of thumb | Radial Nerve C6, C7 |
Extensor Pollicis Longus | Posterior ulna, interosseous membrane | Distal phalanx of thumb | Extends MP and IP joints of thumb | Radial Nerve C6, C7, C8 |
| | | | memorize |
Elbow Muscles Innervated by the Medial Nerve
Question | Answer | Column 3 | Column 4 | Column 5 |
Pronator Teres | Medial epicondyle of humerus and coronoid process of ulna | lateral surface of radius | medially rotates forearm | Median Nerve |
Pronator Quadratus | anterior distal end of ulna | distal end of radius | medially rotates forearm | Median Nerve |
| | | | memorize |
Wrist Muscles Innervated by the Medial Nerve
Question | Answer | Column 3 | Column 4 | Column 5 |
Flexor Carpi Radialis | Medial epicondyle | Base of 2nd and 3rd metacarpals | Wrist flexion, radial deviation | Median Nerve C6, C7 |
Palmaris Longus | Medial epicondyle | Palmar fascia | Assists wrist fuction | Median Nerve C6, C7 |
| | | | memorize |
Finger Muscles Innervated by the Medial Nerve
Question | Answer | Column 3 | Column 4 | Column 5 |
Flexor Digitorum Superficialis | medial epicondyle | 2nd to 5th middle phalanges | 2nd to 5th MCP and PIP flexion | Median Nerve |
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Opponens Pollicis | Trapezium and flexor retinaculum | 1st metacarpal | Opposes thumb (CMC) | Median nerve C6, C7 |
| | | | memorize |
Elbow Muscles Innervated by the Ulnar Nerve
Question | Answer | Column 3 | Column 4 | Column 5 |
Flexor Carpi Ulnaris | Medial epicondyle | anterior lateral carpals ( hook of hamate, pisiform, base of 5th metacarpal | Wrist flexion, ulnar deviation | Ulnar Nerve |
| | | | memorize |
Finger Muscles Innervated by the Ulnar Nerve
Question | Answer | Column 3 | Column 4 | Column 5 |
Flexor Digitorum Profundus | anterior ulna | anterior 2nd to 5th distal phalanges | f2nd and 5th MCP and DIP: flexion | Median and Ulnar Nerve |
| | | | memorize |
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