Muscles of the Forelimb

Question 1

Extensor carpi radialis

Answer 1

O- Lateral supracondylar crest
I- Extensor of the distal phalanges 2-5
In- Radial n
F- Extends carpus and digits

Question 2

Common digital extensor

Answer 2

O- Lateral epicondyle of the humerus
I- Distal phalanx digits 2-5
In- Radial n
F- Extends carpus and digits

Question 3

Lateral digital extensor

Answer 3

O- Lateral epicondyle of the humerus
I- Distal phalanx digits 3-5
In- Radial n
F- Extends digits 3-5

Question 4

Ulnaris lateralis

Answer 4

O- Lateral epicondyle of the humerus
I- MC 5 & accessory carpal bone
In- Radial n
F- Extensor of the carpus

Question 5

Supinator

Answer 5

O- Lateral collateral lig of elbow
I- Proximal craniolateral surface of radius
In- Radial n
F- Rotates forearm and distal limb laterally

Question 6

Abductor pollicis longus

Answer 6

O- Craniolateral surface of radius and ulna
I- Proximal extremity of MC 1
   Superficial part of retinaculum
In- Radial n
F- Extends and abduct digit 1
    Extends carpus

Question 7

Pronator teres

Answer 7

O- Medial epicondyle of the humerus
I- Proximal craniomedial radius
In- Median n
F- Turns the cranial forearm and distal limb medially

Question 8

Flexor carpi radialis

Answer 8

O- Medial epicondyle of the humerus
I- Metacarpal 2 & 3
In- Median n
F- Flexes carpus

Question 9

Superficial digital flexor

Answer 9

O- Medial epicondyle of the humerus
I- Flexor tuberosity of middle phalanx and digits 2-5
In- Median n
F- Flexes carpus and Digits

Question 10

Flexor carpi ulnaris

Answer 10

O- Medial epicondyle of the humerus
Olecranon
I- Accessory carpal bone
In- Ulnar n
F- Flexes carpus

Question 11

Deep digital flexor

Answer 11

O- Medial epicondyle of humerus, radius & ulna
I- Flexor tuberosity of middle phalanx and digits 1-5
In- Median n & Ulna n
F- Flexes carpus & digits

Question 12

Pronator Quadratus

Answer 12

O & I- Bridges interosseous space between radius and ulna
In- Median n
F- Pronator (rotates forearm and distal limb medially)