Term
| Origin of the Abductor Pollicis Brevis |
|
Definition
| Flexor retinaculum and tubercles of the scaphoid and trapezium |
|
|
Term
| Insertion of the Abductor Pollicis Brevis |
|
Definition
| Lateral side of the base of proximal phalanx of thumb |
|
|
Term
| Innervation of the Abductor Pollicis Brevis |
|
Definition
| Recurrent branch on the median nerve |
|
|
Term
| Action of the Abductor Pollicis Brevis |
|
Definition
| Abducts thumb and helps oppose it |
|
|
Term
| Origin of the Flexor Pollicis Brevis |
|
Definition
| Flexor retinaculum and tubercles of the scaphoid and trapezium |
|
|
Term
| Insertion of the Flexor Pollicis Brevis |
|
Definition
| Lateral side of base of proximal phalanx of thumb |
|
|
Term
| Innervation of the Flexor Pollicis Brevis |
|
Definition
| Recurrent branch of the median nerve |
|
|
Term
| Action of the Flexor Pollicis Brevis |
|
Definition
|
|
Term
| Origin of the Opponens Pollicis |
|
Definition
| Flexor retinaculum and tubercles of the scaphoid and trapezium |
|
|
Term
| Insertion of the Opponens Pollicis |
|
Definition
| Lateral side of the 1st metacarpal |
|
|
Term
| Innervation of the Opponens Pollicis |
|
Definition
| Recurrent branch of the median nerve |
|
|
Term
| Action of the Opponens Pollicis |
|
Definition
| Draws 1st metacarpal bone laterally to oppose the thumb toward center of palm and rotates it medially |
|
|
Term
| Origin of the Adductor Pollicis |
|
Definition
Oblique head: bases of 2nd and 3rd metacarpals, capitate, and adjacent carpals
Transverse head: anterior surface of body of 3rd metacarpal |
|
|
Term
| Insertion of Adductor Pollicis |
|
Definition
| Medial side of base of proximal phalanx of thumb |
|
|
Term
| Innervation of Adductor Pollicis |
|
Definition
| Deep branch of ulnar nerve |
|
|
Term
| Action of Adductor Pollicis |
|
Definition
| Adducts thumb toward middle digit |
|
|
