1
Q
Abductor pollicis brevis - O & I
A
O: tubercle of scaphoid and trapezium
I: Lateral side of the base of thumb
2
Q
Abductor pollicis brevis - F & N
A
F: ABD. Of thumb @ CMC J
N: Median nerve
3
Q
Flexor pollicis brevis - O & I
A
O: Flexor retinaculum & trapezium
I: Lateral side of the base of the proximal side of the thumb
4
Q
Flexor pollicis brevis - F & N
A
F: 1) Flex. Of thumb @ CMC & MCP Js
N: Median & Ulnar nerves
5
Q
Opponens pollicis - O & I
A
O: Flexor retinaculum & tubercle of trapezium
I: Lateral side of 1st metacarpal
6
Q
Opponens pollici - F & N
A
F: 1) Opposition of thumb @ CMC J
N: Median nerve
