Thoracic Limb Muscles By Action

Question 1

Muscles that Extend the Shoulder

Answer 1

Infraspinatus
Supraspinatus
Subscapularis
Coracobrachialis
Biceps Brachii

Question 2

Muscles that Flex the Shoulder

Answer 2

Deep Pectoral
Latissimus Dorsi
Deltoideus
Infraspinatus
Teres Major
Teres Minor
Long Head of Triceps Brachii

Question 3

Muscles that Extend the Elbow

Answer 3

Tensor Fasciae Antebrachii
Triceps Brachii
Anconeus

Question 4

Muscles that Flex the Elbow

Answer 4

Biceps Brachii
Brachialis
Supinator
Pronator Teres

Question 5

Muscles that Extend the Carpus and Digits

Answer 5

Extensor Carpi Radialis
Common Digital Extensor
Lateral Digital Extensor
Abductor Digiti I Longus

Question 6

Muscles that Flex the Carpus and Digits

Answer 6

Ulnaris Lateralis
Flexor Carpi Ulnaris
SDF
DDF
Flexor Carpi Radialis

Question 7

Muscles that Pronate the Antebrachium

Answer 7

Pronator Teres

Pronator Quadratis

Question 8

Muscles that Adduct the Limb

Answer 8

Pectorals
Subscapularis
Coracobrachialis

Question 9

Muscles that Abduct the Limb

Answer 9

Trapezius

Infraspinatus

Question 10

Which Muscle is responsible for the “digging” action?

Answer 10

Latissimus Dorsi

Question 11

Which Muscle pulls the trunk cranially?

Answer 11

Deep Pectoral

Question 12

Which Muscles advance the limb?

Answer 12

Brachiocephalicus and Omotransversarius