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Wet Lab 6

Extensor/Supinator Muscles of Forearm

QuestionAnswer
List proximal/distal/nerve/actions of F9 F9 = Brachioradialis Proximal (F9-P): Proximal supra-epicondylar ridge of humerus Distal (F9-D): Lateral, distal radius (near styloid process) Nerve (F9-N): Radial Nerve Action (F9-Act): Weak flexion of fore-arm at mid-pronated position
List proximal/distal/nerve/actions of F10 F10 = Extensor carpi radialis longus Proximal (F10-P): Lateral supra-epicondylar ridge of humerus Distal (F10-D): Dorsal aspect of base of 2nd metacarpal Nerve (F10-N): Radial Nerve Action (F10-Act): Abduct and Extend hand (at wrist joint)
List proximal/distal/nerve/actions of F11 F11 = Extensor carpi radialis brevis Proximal (F11-P): Lateral epicondyle Distal (F11-D): Dorsal aspect of base of 3rd metacarpal Nerve (F11-N): Radial Nerve Action (F11-act): Abduct and extend hand at wrist joint
List proximal/distal/nerve/actions of F12) F12 = Extensor digitorum Proximal (F12-P): Lateral epicondyle Distal (F12-D): Extensor expansion of medial 4 digits Nerve (F12-N): Radial nerve Action (F12-Act): Extend medial 4 digits (at MC & IP JOINTS)
List proximal/distal/nerve/actions of F13 F13 = Extensor digitorum minimi Proximal (F13-P): Lateral epicondyle Distal (F13-D): Extensor expansion of 5th digit Nerve: Radial Action (F13-act): Extend 5th digit at MC and IP joint
List proximal/distal/nerve/actions of F14 F14 = Extensor carpi ulnaris Proximal (F14-P): Lateral epicondyle ( posterior ulna) Distal (F14-D): Dorsal aspect of base of 5th metacarpal Nerve: Radial ACtion (F14-act): Adduct and extend hand at wrist joint
List proximal/distal/nerve/actions of F15 F15 = Supinator Proximal (F15-P): Lateral epicondyle Distal (F15-D): Lateral, posterior, anterior surface of proximal 1/3 of radius Nerve (F15-N): Radial Action (F15-ACt): Supinate forearm & rotate radius
List proximal/distal/nerve/actions of F16 F16 = Extensor Indicis Proximal (F16-P): Posterior surface of ulna Distal (F16-D): Extensor expansion of 2nd digit Nerve (F16-N): Posterior interosseous (radial deep) Action (F16-act): Extend 2nd digit
List proximal/distal/nerve/actions of F17 F17 = Abductor Pollicis Longus Proximal (F17-P): Posterior, proximal surface of ulna Distal (F17-D): Base of 1st metacarpal Nerve (F17-N): Posterior interosseous Action: Abduct and extend thumb (at CMC joint)
List proximal/distal/nerve/actions of F18 F18 = Extensor Pollicis Brevis Proximal (F18-P): Posterior, distal surface of radius Distal (F18-D): Dorsal aspect of the phalanx (thumb) Nerve: Posterior interosseous Action: Extend thumb at IP joint
List proximal/distal/nerve/actions of F19 F19 = Extensor Pollicis Longus Proximal (F19-P): Posterior, middle part of ulna Distal (F19-D): Dorsal aspect of the proximal phalange Nerve: POsterior interosseous Action:
Created by: Catalyx994