Actions of Muscles of the Thoracic Limb Flashcards

1
Q

superficial pectoral muscles

A

adduct limb when non-weight bearing; prevent abduction when limb is weight bearing

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2
Q

deep pectoral

A

pull limb cranially and extend shoulder; draw limb caudally and flex shoulder when non-weight bearing; adduct limb

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3
Q

brachiocephalicus (all parts)

A

advance limb; extend shoulder; draw head and neck to side

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4
Q

sternocephalicus

A

draw head and neck to side

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5
Q

sternohyoideus

A

pull tongue and larynx caudally

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6
Q

sternothyroideus

A

pull tongue and larynx caudally

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7
Q

omotransversarius

A

advance limb or flex neck laterally

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8
Q

trapezius (both parts)

A

elevate and abduct limb

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9
Q

rhomboideus (all parts)

A

elevate limb, draw scapula against body

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10
Q

latissimus dorsi

A

draw limb caudally; flex shoulder

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11
Q

serratus ventralis cervicis and thoracis

A

support trunk, depress scapula

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12
Q

deltoideus

A

flex and abduct shoulder

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13
Q

infraspinatus

A

extend, flex shoulder; abduct and rotate shoulder laterally; stabilize joint

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14
Q

teres minor

A

flex shoulder, rotate shoulder laterally

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15
Q

supraspinatus

A

extend, stabilize shoulder

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16
Q

subscapularis

A

adduct, extend, medially stabilize shoulder

17
Q

teres major

A

flex, rotate medially shoulder

18
Q

coracobrachialis

A

adduct, stabilize shoulder joint

19
Q

tensor fasciae antebrachii

A

extend elbow

20
Q

triceps brachii (all heads)

A

extend elbow

21
Q

triceps brachii long head

A

flex shoulder joint

22
Q

anconeus

A

extend elbow

23
Q

biceps brachii

A

flex elbow, extend shoulder

24
Q

brachialis

A

flex elbow

25
Q

extensor carpi radialis

A

extend carpus

26
Q

common digital extensor

A

extend joints of digits 2-5

27
Q

lateral digital extensor

A

extend joints of digits 3-5

28
Q

extensor carpi ulnaris

A

abduct carpal joints, support carpus when weight bearing

29
Q

supinator

A

supinate paw, flex elbow

30
Q

abductor digit I longus (abductor pollicis longus)

A

abduct digit 1, extend carpal joints

31
Q

pronator teres

A

pronation, flex elbow

32
Q

flexor carpi radialis

A

flex carpus

33
Q

superficial digital flexor

A

flex carpal, metacarpophalangeal, and proximal interphalangeal joints

34
Q

flexor carpi ulnaris

A

flex carpus

35
Q

deep digital flexor (all heads)

A

flex carpal, metacarpophalangeal, and prximal and distal interphalangeal joints

36
Q

pronator quadratus

A

pronate paw