Hand OINA

Question 1

What hand muscles are thenar muscles

Answer 1

• Abductor Pollicis Brevis (APB)
• Flexor pollicis Brevis (FPB)
• Opponens Pollicis (OP)

Question 2

APB (abductor pollicis brevis)

Answer 2

O: flexor retinaculum scaphoid and trapezium
I: lateral side of base of the proximal phalanx
N: recurrent branch if median n. (C8-T1)
A: thumb CMC ABD

Question 3

Flexor Pollicis Brevis

Answer 3

O: flexor retinaculum and trapezium
I:lateral side of base of the proximal phalanx
N: recurrent branch of median n.
A: flexes thumb

Question 4

Opponens Pollicis

Answer 4

O: flexor retinaculum and trapezium
I:lateral side of base of the proximal phalanx
N: recurrent branch of median n.
A: oppose thumb

Question 5

ADductor Pollicis Oblique Head

Answer 5

O: carpal bones and bases of metacarpals 2 and 3
I: base of proximal phalanx of thumb
N: ulnar n.
A: adduct thumb

Question 6

ADductor Pollicis Transverse Head

Answer 6

O: shaft of 3rd metacarpal
I: base of proximal phalanx of thumb
N: ulnar n.
A: adduct thumb

Question 7

What hand muscles are hypothenar muscles?

Answer 7

• Abductor Digiti Minimi
• Flexor Digiti Minimi Brevis
• Opponens Digiti Minimi

Question 8

Abductor Digiti Minimi

Answer 8

O: pisiform
I: base of proximal phalanx of 5th digit
N: deep branch of ulnar n.
A: abduction of 5th digit

Question 9

Flexor Digiti Minimi

Answer 9

O: hamate
I: base of proximal phalanx of 5th digit
N: deo branch of unlar n.
A: flexes 5th digit

Question 10

Opponens Digiti Minimi

Answer 10

O: hamate
I: medial border of 5th metacarpal
N: deep branch of unlar n.
A: oppose 5th digit

Question 11

What muscles are considered mid palmar?

Answer 11

lumbricals

Question 12

Lumbricals

Answer 12

O: tendons of FDP
I: lateral side if extensor expansions
N:
- Median N. (lumbricals 1 & 2)
- Deep branch of Ulnar N. (lumbrical 3 & 4)
A: flexion of the MP joints and extension of proximal IP joints