| Question | Answer |
| Palmaris brevis
N | Superficial branch of ulnar nerve
C8, T1 |
| Palmaris brevis
BS | Branches from superficial palmar arch |
| Palmaris brevis
O | 1. Medial border of central part of palmar aponeurosis
2. Flexor retinaculum |
| Palmaris brevis
I | Dermis on ulnar border of hand |
| Lumbricals
N | 1st & 2nd: Median n.
3rd & 4th: Deep terminal brnahc of ulnar n |
| Lumbricals
BS | 1st & 2nd: 1st & 2nd dorsal metacarpal and dorsal digitial aa
3rd & 4th: 2nd & 3rd common palmar digital aa, 3rd & 4th dorsal digital aa |
| Lumbricals
O | 1st & 2nd: radial sides of palmar surface s of tendons of 2nd & 3rd fingers
3rd & 4th: Adjacent sides of tendons of 3rd & 4th fingers and 4th & 5th fingers |
| Lumbricals
I | 1. Radial side of corresponding finger
2. Lateral margin of dorsal digital expansion of extensor digitorum |
| Palmar interossei
N | Deep branch of ulnar n
C8, T1 |
| Palmar interossei
BS | Branches from deep palmar arch and princeps pollicis, radialis indicis, palmar metacarpal, proper palmar digitial, and proximal and distal perforating aa |
| Palmar interossei
O (1st & 2nd) | 1st: Ulnar side of palmar surface of base of 1st metacarpal
2nd: Ulnar side of 2nd metacarpal |
| Palmar interossei
O (3rd & 4th) | 3rd: Radial side of 4th metacarpal
4th: Radial side of 5th metacarpal |
| Palmar interossei
I (1st & 2nd) | 1st: Seisamoid bone on ulnar side of 1st proximal phalanx, phalanx, and dorsal digital expansion
2nd: Ulnar side of 2nd distal expansion |
| Palmar interossei
I (3rd & 4th) | 3rd: Radial side of 4th digital expansion
4th: Radial side of 5th digital expansion, base of proximal phalanx |
| Dorsal interossei
N | Deep branch of ulnar n
C8, T1 |
| Dorsal interossei
BS | 1. Radial a
2. Princeps pollicis a
3. Radialis indicis a |
| Dorsal interossei
O | Adjacent sides of 2 metacarpal bones |
| Dorsal interossei
I | Bases of proximal phalanges and dorsal digital expansions of radial side of 2nd digit, radial & ulnar sides of 3rd digit, and ulnar side of 4th digit |
