Hand

Question 1

Flexor digitorum superficialis

Answer 1

Common flexor tendon on the medial epicondyle, coronoid process, and radius

Sides of the middle phalanx of the 4 fingers

Flexes PIP and MCP joint of the fingers

Median nerve (C7, C8, T1)

Question 2

Flexor digitorum profundus

Answer 2

Upper three-fourths of the ulna

Distal phalanx of the four fingers

Flexes all 3 joints of the finger

Median and ulnar nerves (C8, T1)

Question 3

Flexor Pollicis Longus

Answer 3

Radius, anterior surface

Distal phalanx of thumb

Flexes all 3 joints of thumb

Median nerve (C8, T1)

Question 4

Abductor pollicis Longus

Answer 4

Posterior radius, interosseus membrane, middle ulna

Base of the 1st metacarpal

Abducts thumb

Radial nerve (C6, C7)

Question 5

Extensor Pollicis Brevis

Answer 5

Posterior distal radius

Base of proximal phalanx of thumb

Extends MCP and CMC joint of thumb

Radial nerve (C6, C7)

Question 6

Extensor pollicis Longus

Answer 6

Middle posterior ulna and interosseus membrane

Base of distal phalanx of thumb

Extends all 3 joints of the thumb

Radial nerve (C6, C7, C8)

Question 7

Extensor digitorum

Answer 7

Lateral epicondyle of humerus

Base of distal phalanx of the 2nd- 5th fingers

Extends all three joints in finger

Radial nerve (C6, c7, c8)

Question 8

Extensor indicis

Answer 8

Distal ulna

base of distal phalanx of 2nd finger

Extends all three joints of second finger

Radial nerve (C6, c7, c8)

Question 9

Extensor digiti minimi

Answer 9

Lateral epicondyle of humerus

Base of distal phalanx of 5th finger

Extend all 3 joints in 5th finger

Radial nerve (C6, 7,8)

Question 10

Flexor pollicis Brevis

Answer 10

Trapezium and flexor retinaculum

Proximal phalanx of the thumb

Flexes MCP and CMC joint of thumb

Median nerve (C6, C7)

Question 11

Abductor pollicis Brevis

Answer 11

Scaphoid, trapezium, and flexor retinaculum

Proximal phalanx of the thumb

Abducts the thumb

Median nerve (C6, C7)

Question 12

Opponens pollicis

Answer 12

Trapezium and flexor retinaculum

First metacarpal

Opposes the thumb

Median nerve (C6, c7)

Question 13

Adductor pollicis

Answer 13

Capitate, bases of the 2nd and 3rd metacarpal, and distal 2/3 of the palmar surface of the third metacarpal

Base of proximal phalanx of thumb

Adducts thumb

Ulnar nerve (C8, T1)

Question 14

Dorsal interossei

Answer 14

Adjacent metacarpals

Base of proximal phalanx

Abducts fingers at MCP joint

Ulnar nerve (C8, T1)

Question 15

Palmar Interosseus

Answer 15

2nd, 4th and 5th metacarpals

Base of respective proximal phalanx

Adduced fingers at MCP joint

Ulnar nerve (C8, T1)

Question 16

Lumbrical muscles

Answer 16

Tendon of the flexor digitorum profundus muscle

Tendon of the extensor digitorum muscle

Flexes the MCP joint while extending the PIP AND DIP joints

First and second lumbricals: median nerve (C8, T1)
Third and fourth lumbricals: ulnar nerve (C8, T1)

Question 17

Abductor digiti minimi

Answer 17

Pisiform and tendon of flexor Carpi ulnaris

Proximal phalanx of fifth finger

Abducts the MCP joint of 5th finger

Ulnar nerve (C8, T1)

Question 18

Opponens digiti minimi

Answer 18

Hamate and flexor retinaculum

5th metacarpal

Opposes the 5th finger

Ulnar nerve (C8, T1)