Lateral and Posterior FA and Hand Muscles

Question 1

Brachioradialis

Answer 1

O: Lateral supracondylar ridge of humerus
I: Base of styloid process of radius

Question 2

Extensor carpi radialis longus

Answer 2

O: Lateral supracondylar ridge of humerus
I: Posterior surface of base of 2nd metacarpal bone

Question 3

Extensor carpi radialis brevis

Answer 3

O: Lateral epicondyle of humerus
I: Posterior surface of base of third metacarpal bone

Question 4

Extensor Digitorum

Answer 4

O: Lateral epicondyle of humerus
I: Middle and distal phalanges of medial 4 fingers

Question 5

Extensor Digiti Minimi

Answer 5

O: Lateral epicondyle of humerus
I: Extensor expansion of little finger

Question 6

Extensor Carpi Ulnaris

Answer 6

O: Lateral epicondyle of humerus
I: Base of 5th metacarpal bone

Question 7

Anconeus

Answer 7

O: Lateral epicondyle of humerus
I: Lateral surface of olecranon process of ulna

Question 8

Supinator

Answer 8

O: Lateral epicondyle of humerus, annular ligament of proximal radioulnar joint, and ulna
I: Neck and shaft of radius

Question 9

Abductor Pollicis Longus

Answer 9

O: Posterior surface of shaft of radius and ulna
I: Base of first metacarpal bone

Question 10

Extensor Pollicis Brevis

Answer 10

O: Posterior surface of shaft of radius
I: Base of proximal phalanx of thumb

Question 11

Extensor Pollicis Longus

Answer 11

O:Posterior surface of shaft of ulna
I: Base of distal phalanx of thumb

Question 12

Extensor Indicis

Answer 12

O:Posterior surface of shaft of ulna
I: Extensor expansion of index finger

Question 13

Abductor Pollicis Brevis

Answer 13

O: Scaphoid, Trapezium, Flexor Retinaculum
I:Base of proximal phalanx of thumb

Question 14

Flexor pollicis brevis

Answer 14

O: Flexor retinaculum
I: Base of proximal phalanx of thumb

Question 15

Opponens Pollicis

Answer 15

O: Flexor retinaculum
I: Shaft of metacarpal bone of thumb

Question 16

Adductor Pollicis

Answer 16

O: Oblique head; 2nd and 3rd metacarpal bones; transverse head; 3rd metacarpal bone
I: Base of proximal phalanx of thumb

Question 17

Abductor digiti minimi

Answer 17

O: Pisiform bone
I: Base of proximal phalanx of little finger

Question 18

Flexor digiti minimi

Answer 18

O: Flexor Retinaculum
I: Base of proximal phalanx of little finger

Question 19

Opponens digiti minimi

Answer 19

O: Flexor Retinaculum
I: Medial border fifth metacarpal bone

Question 20

Muscles of little finger

Answer 20

Abductor digiti minimi
Flexor Digiti minimi
Opponens digiti minimi

Question 21

Muscles of thumb

Answer 21

Abductor pollicis brevis
Flexor pollicis brevis
Opponens pollicis
Adductor pollicis

Question 22

Flexes forearm at elbow joint; rotates forearm to the mid prone position; Radial nerve; 5-7

Answer 22

Brachioradialis action, NS and NR

Question 23

Extends and abducts hand at wrist joint; Radial nerve; 6-7

Answer 23

Extensor carpi radialis longus action, NS and NR

Question 24

Extends and abducts hand at wrist joint; deep branch of radial nerve; 7-8

Answer 24

Extensor carpi radialis action, NS and NR

Question 25

Extends fingers and hands; deep branch of radial nerve; 7-8

Answer 25

Extensor digitorum action, NS and NR

Question 26

Extends metacarpal phalangeal joint of little finger; deep branch of radial nerve; 7-8

Answer 26

Extensor digiti minimi action, NS and NR

Question 27

Extends and adducts hand at wrist joint; deep branch of radial nerve; 7-8

Answer 27

Extensor carpi ulnaris action, NS and NR

Question 28

Extends elbow joint; radial nerve; 7-T1

Answer 28

Anconeus action, NS and NR

Question 29

Supination of forearm; deep branch of radial nerve; 7-8

Answer 29

Supinator action, NS and NR

Question 30

Abducts and extends thumb; deep branch of radial nerve; 7-8

Answer 30

Abductor Pollicis Longus action, NS and NR

Question 31

Extends metacarpophalangeal joints of thumb; deep branch of radial nerve; 7-8

Answer 31

Extensor pollicis brevis action, NS and NR

Question 32

Extend distal phalanx of thumb; deep branch of radial nerve; 7-8

Answer 32

Extensor pollicis longus action, NS and NR

Question 33

Extends metacarpophalangeal joint of index finger; deep branch of radial nerve; 7-8

Answer 33

Extensor indicis action, NS and NR

Question 34

Abduction of thumb; median nerve; 8-T1

Answer 34

Abductor pollicis brevis action, NS and NR

Question 35

Flexes metacarpophalangeal joint of thumb; median nerve; 8-T1

Answer 35

Flexor pollicis brevis action, NS and NR

Question 36

Pulls thumb medially and forward across palm; median nerve; 8-T1

Answer 36

Opponens pollicis action, NS and NR

Question 37

Adduction of thumb; deep branch of ulnar nerve; 8-T1

Answer 37

Adductor pollicis action, NS and NR

Question 38

Abducts little finger; deep branch of ulnar nerve; 8-T1

Answer 38

Abductor digiti minimi action, NS and NR

Question 39

Flexes little finger; deep branch of ulnar nerve; 8-T1

Answer 39

Flexor digiti minimi action, NS and NR

Question 40

Pulls 5th metacarpal forward as in cupping the palm; deep branch of ulnar nerve; 8-T1

Answer 40

Opponens digiti minimi action, NS and NR

Question 41

Blood supply of muscles of the hand

Answer 41

Radial and Ulnar Artery

Question 42

Blood supply of lateral compartment of forearm

Answer 42

Radial and Brachial Artery

Question 43

Blood supply of posterior compartment of forearm

Answer 43

Posterior and anterior interosseous artery

Question 44

Blood supply of anterior compartment of forearm

Answer 44

Radial and ulnar artery