Quiz 4: Muscle Cards
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36 terms
Terms | Definitions |
|---|---|
 Flexor digitorum superficialis: Origin | Medial epicondyle of humerus; adjacent anterior ulna |
| Flexor digitorum superficialis: Insertion | middle phalanges 2-5 (mid lateral portion) |
| Flexor digitorum superficialis: Action | Flexes fingers and flexes wrist |
| Flexor digitorum superficialis: Innervation | median nerve |
| Flexor digitorum profundus: Origin | medial and posterior ulna, coronoid process, interosseus membrane |
| Flexor digitorum profundus: Insertion | bases of distal phalanges 2-5 |
| Flexor digitorum profundus: Action | flexes distal phalanges |
| Flexor digitorum profundus: Innervation | palmar interisseus nerve (from median and ulnar nerves) |
| Flexor pollicus longus: Origin | anterior radius, interosseus membrane |
| Flexor pollicus longus: insertion | base of distal phalanx of thumb |
| Flexor pollicus longus: Action | flexes thumb |
| Flexor pollicus longus: Innervation | median nerve |
| Abductor pollicus longus: Origin | Proximal, posterior ulna and radius |
| Abductor pollicus longus: Insertion | Lateral margin of metacarpal 1 |
| Abductor pollicus longus: Action | Abducts thumb |
| Abductor pollicus longus: Innervation | Deep radial nerve |
| Extensor pollicus brevis: Origin | posterior radius (distal to abductor pollicus longus origin) |
| Extensor pollicus brevis: Insertion | base of proximal phalange of thumb |
| Extensor pollicus brevis: Action | extends thumb, abducts hand |
| Extensor pollicus brevis: Innervation | deep radial nerve |
| Extensor pollicus longus: Origin | posterior and lateral ulna, interosseus membrane |
| Extensor pollicus longus: Insertion | base of distal phalange of thumb |
| Extensor pollicus longus: Action | extends thumb, abducts hand |
| Extensor pollicus longus: Innervation | deep radial nerve |
| Extensor digitorum: Origin | Lateral epicondyle of humerus |
| Extensor digitorum: Insertion | posterior phalanges 2-5 |
| Extensor digitorum: Action | extends fingers and hand |
| Extensor digitorum: Innervation | deep radial nerve |
| Extensor indicis: Origin | Posterior ulna, interosseus membrane |
| Extensor indicis: Insertion | posterior index finger |
| Extensor indicis: Action | extends and adducts index finger |
| Extensor indicis: Innervation | deep radial nerve |
| Extensor digiti minimi: Origin | Lateral epicondyle of humerus (via tendon) |
| Extensor digiti minimi: Insertion | Posterior proximal phalange of little finger |
| Extensor digiti minimi: Action | extends little finger |
| Extensor digiti minimi: Innervation | deep radial nerve |
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