Hand

Question 1

Lumbricals: O

Answer 1

Four tendons of flexor digitorum profundus. Radial 2: radial side only (unipennate). Ulnar 2: cleft between tendons( bipennate)

Question 2

Lumbricals: I

Answer 2

Extensor expansion (dorsum of prox phalanx ) of fingers 2-5 radial side

Question 3

Lumbricals: N

Answer 3

Lat 2: median N (C8, T1). Med/Short 2: deep br of ulnar N (C8, T1)

Question 4

Lumbricals: A

Answer 4

Flex MCP jnts and extend IP jnts of fingers

Question 5

Dorsal Interosseous : O

Answer 5

Bipennate from inner aspects of shafts of all MCs

Question 6

Dorsal Interosseous: I

Answer 6

Prox phalanges and dorsal extensor expansion on radial side of index and middle fingers and ulnar side of middle and ring fingers

Question 7

Dorsal Interosseous : N

Answer 7

Deep br of ulnar N (T1)

Question 8

Dorsal Interosseous : A

Answer 8

Flex MCP jnts and extend IP jnts of fingers

Question 9

Palmar Interosseous: O

Answer 9

Ant shafts of 1, 2, 4, 5 MCs (unipennate)

Question 10

Palmar Interosseous: I

Answer 10

Prox phalanges and dorsal extensor expansion on radial side of index and middle fingers and ulnar side of middle and ring fingers

Question 11

Palmar Interosseous : N

Answer 11

Deep br of ulnar N (T1)

Question 12

Palmar Interosseous: A

Answer 12

Adduct to axis of middle finger. Flex MCP jnt whilst extending IP jnts