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Canine Anatomy: Extrinsic Muscles of the Forelimb
extrinsic muscles of the forelimb
18
Veterinary Medicine
Professional
09/05/2011

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Cards

Term
Superficial pectoral
Definition

ORIGIN: sternum

TERMINATIONS: crest of greater tubercle and cranial humeral border

ACTION: adduct the thoracic limb

Term
Deep pectoral
Definition

ORIGIN: sternum

TERMINATION: Greater and lesser tubercles of the humerus

ACTION: adduct the thoracic limb and pull it caudally

Term
Brachiocephalicus
Definition

ORIGIN: clavicular intersection

TERMINATIONS: distal cranial humerus, temporal bone & neck

ACTION: pull the limb cranially; depress and pull head and neck laterally

Term
Omotransversarius
Definition

ORIGIN: wing of the atlas

TERMINATION: distal spine of the scapula

ACTION: pull thoracic limb cranially; depress and pull head and neck laterally

Term
Trapezius
Definition

ORIGIN: cervical part: dorsal neck; thoracic part: dorsal thorax

TERMINATION: spine of the scapula

ACTION: elevate the thoracic limb

 

Term
Rhomboideus
Definition

ORIGINS: dorsal thorax and neck, occipital bone

TERMINATION: dorsal border of the scapula

ACTION: elevate the thoracic limb

Term
Serratus ventralis
Definition

ORIGINS: C vertebrae, thoracic wall (ribs)

TERMINATION: serrated face of scapula

ACTION: support and/or elevate the trunk - acts as a sling

Term
Latissimus dorsi
Definition

ORIGIN: fascia

TERMINATION: medial humerus

ACTION: draw thoracic limb caudally, flex OR extend the humeral joint

Term
Sternocephalicus
Definition

ORIGIN: sterum

TERMINATION: mastoid process, occipital bone

ACTION: depress head and neck; draw head and neck laterally

Term
ACTION: adduct thoracic limb
Definition
superficial pectoral, deep pectoral
Term
ACTION: draw thoracic limb cranially
Definition
brachiocephalicus, omotransversarius
Term
ACTION: draw thoracic limb caudally
Definition
Deep pectoral, latissimus dorsi
Term
ACTION: elevate thoracic limb
Definition
trapezius, rhomboideus
Term
ACTION: flex humeral joint
Definition
latissimus dorsi
Term
ACTION: extend humeral joint
Definition
latissimus dorsi
Term
ACTION: depress head and neck, draw laterally
Definition
brachiocephalicus, omotransversarius, sternocephalicus
Term
muscles that attach to the humerus
Definition
superficial pectoral, deep pectoral, brachiocephalicus, latissimus dorsi
Term
muscles that attach to the scapula
Definition
Omotransversarius, trapezius, rhomboideus, serratus ventralis
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