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Gross - M of Forearm

Action, Origin, Insertion, and Nerves

QuestionAnswer
Pronator teres (Ulnar&humeral head) insertion Middle of convexity of lateral suface of radius
Pronator teres nerve Median nerve
Pronator teres action Pronates and flexes forearm @ elbow
Pronator teres( Ulnar head) origin Coronoid process
Flexor Carpi radialis (FCR) Origin Medial epicondyle of humerus
FCR insertion Base of second metacarpal
FCR nerve Median Nerve
FCR action Flexes and abducts hand @ wrist
Palmaris Longus origin Medial epicondyle of humerus
Palmaris longus insertion Distal half of flexor retinaculum and apex of palmer aponeurosis
Palmaris longus nerve Median Nerve
Palmaris longus action Flexes hand @ wrist, tenses palmar aponeurosis
Pronator teres( humeral head) origin Medial epicondyle of humerus
Where is the common flexor origin Medial epicondyle of humerus
Flexor carpi ulnaris (FCU) origin Humeral: Medial epicondyle of humerus. Ulnar: Olecranon and posterior border, aponeurosis
Flexor carpi ulnaris insertion Humeral & Ulnar: Pisiform, hook of hamate, 5th metacarpal
FCU nerve Ulnar Nerve
FCU Action Flexes and adducts the hand @ wrist.
FDS Humeroulnar head origin Medial epicondyle (common flexor origin and coronoid process)
FDS insertion Shafts (bodies) of middle phalanges of medial four fingers
FDS nerve Median Nerve
FDS Action Flexes middle phalanges@ proximal interphalangeal joints of middle four fingers; flexes proximal phalanges @ metacarpophalangeal joints
FDS Radial head origin Superior half of anterior boarder
FDP Origin Medial & Lateral part: Proximal three quarters of medial and anterior surfaces of ulna and interosseous membrane
FDP insertion Medial & Lateral: Bases of distal phalanges of 4th and 5th fingers
FDP nerve Medial: Ulnar nerve Lateral: Anterior interosseous nerve, from median nerve
FDP Action (Medial part) Flexes distal phalanges 4 and 5 @ distal interphalangeal joints
FDP Action (Lateral part) Flexes distal phalanges 2 and 3 @ distal interphalangeal joints
Flexor Pollicis longus (FPL) Origin Anterior surface of radius and adjacent interosseous membrane
FPL insertion Base of distal phalanx of thumb
FPL nerve Anterior interosseous nerve, from median nerve
FPL Action Flexes phalanges of 1st digit (thumb)
Pronator quadratus origin Distal quarter of anterior surface of ulna
Pronator quadratus insertion Distal quarter of anterior surface of radius
Pronator quadratus Action Pronates forearm; deep fibers bind radius and ulna together
Created by: LHemphill