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Actions of Large Animal Extrinsic Muscles of the Thoracic Limb

Terms in this set (16)

Adduct the limb when not weight bearing
Prevent limb from being abducted when bearing weight
What does the superficial (descending and transverse) pectoral muscles do?
Pull the trunk cranially and extend the shoulder joint
What does the deep pectoral muscles do when the limb is advanced and fixed?
Draw the limb caudally and flex the shoulder joint
What does the deep pectoral muscles do when the limb is not supporting weight?
False, they also adduct the limb
T/F along with other actions, the deep pectoral muscles also abduct the limb
Advance the limb, extend the shoulder joint and draw the neck and head to the side
What does the brachiocephalicus muscle do?
Advance the limb and flex the neck laterally
What does the omotransversarius do?
To pull the tongue caudally
What does the omohyoideus do?
Elevate and abduct the thoracic limb
What does the trapezius do?
Elevate the limb and draw the scapula against the trunk
What does the rhomboideus do?
Draw the limb caudally and flex the shoulder joint
The deep pectoral muscles also do this when not supporting weight
What does the latissimus dorsi do? What other muscle does the same thing?
Support the trunk and depress the scapula
What does the serratus ventralis do?
Draw the head and neck to the side
What does the sternocephalicus do?
Pull the tongue and larynx caudally
What does the sternohyoideus and sternothyroideus do?
Equine
What animal has a subclavius?
Adduct and retract the limb
What does the subclavius do?
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