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Exam 6 A&P
Origin-Insertion-Action-Innervation of forarm flexors
| Question | Answer |
|---|---|
| Origin of Pronator quadratus | Anterior surface of the ulna (distal quarter) |
| Insertion of Pronator quadratus | Anterior surface of the radius (distal quarter) |
| Action of Pronator quadratus | Forearm pronation and binding of the radius and ulna |
| Innervation of Pronator quadratus | Anterior interosseous nerve |
| Origin of Flexor pollicis longus | Anterior surface of the radius and interosseous membrane |
| Insertion of Flexor pollicis longus | Base of the distal phalanx of the thumb |
| Action of Flexor pollicis longus | Flexion of the phalanges of the thumb |
| Innervation of Flexor pollicis longus | Anterior interosseous nerve |
| Origin of Flexor digitorum profundus | Proximal parts of the anterior and lateral surfaces of the ulna and interosseous membrane |
| Insertion of Flexor digitorum profundus | Bases of the phalanges of the 4th and 5th digits (medial part), bases of the phalanges of the 2nd and 3rd digits (lateral part) |
| Action of Flexor digitorum profundus | Flexion of the distal phalanges at the interphalangeal joints of the 4th and 5th digits (medial part) and of the 2nd and 3rd digits (lateral part) |
| Innervation of Flexor digitorum profundus | Ulnar nerve (medial part), anterior interosseous nerve (lateral part) |
| Origin of Flexor digitorum superficialis | Medial epicondyle of the humerus and coronoid process of the ulna (humero-ulnar head) and superior half of anterior border (ulnar head) |
| Insertion of Flexor digitorum superficialis | Shafts of middle phalanges of medial four digits |
| Action of Flexor digitorum superficialis | Flexion of middle phalanges at proximal interphalangeal joints and flexion of the proximal phalanges at the metacarpophalangeal joints of the middle four digits |
| Innervation of Flexor digitorum superficialis | Median nerve |
| Origin of Flexor carpi radialis muscle | medial epicondyle of the humerus (common flexor tendon) |
| Insertion of Flexor carpi radialis muscle | bases of 2nd metacarpal bone |
| Action of Flexor carpi radialis muscle | flexion and abduction of the hand at the wrist joint |
| Innervation of Flexor carpi radialis muscle | median nerve |
| Origin of Flexor carpi ulnaris muscle | humeral head (medial epicondyle of the humerus), ulnar head (olecranon and posterior border of the ulna) |
| Insertion of Flexor carpi ulnaris muscle | pisiform bone, hook of hamate bone, base of the 5th metacarpal bone |
| Action of Flexor carpi ulnaris muscle | flexion and adduction of the hand at the wrist |
| Innervation of Flexor carpi ulnaris muscle | ulnar nerve |
| Origin of Palmaris longus | Medial epicondyle of the humerus (common flexor tendon) |
| Insertion of Palmaris longus | Flexor retinaculum and palmar aponeurosis |
| Action of Palmaris longus | Flexion of the hand at the wrist joint |
| Innervation of Palmaris longus | Median nerve |
| Origin of Pronator teres | Medial epicondyle of the humerus (humeral head), coronoid process of the ulna (ulnar head) |
| Insertion of Pronator teres | Lateral side of the radius |
| Action of Pronator teres | Pronation of forearm, flexion of elbow |
| Innervation of Pronator teres | Median nerve |
| Memorize the superficial forearm flexors using the following mnemonic! 'Pass/Fail, Pass/Fail, Fail' | Pronator teres Flexor carpi radialis Palmaris longus Flexor carpi ulnaris Flexor digitorum superficialis |
Created by:
JML19
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