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12 Cards in this Set

  • Front
  • Back

Cutaneous Trunci

Attachment -


Superficial fascia of trunk and skin (covers entire thoracic and lumbar region)


Action - Twitches Skin

Superficial Transverse and Descending Pectoralis

Attachments -

Origin: Cranial 2-3 sternebrae


Insertion: Greater tubercle of the humerus


Action - Adduction (moves limb forward w/out weight)


Agonist - Deep Pectoralis


Innervation - cranial pectoral nerves



Deep Pectoral

Attachment -


Origin: ventral sternum


Insertion: lesser tubercle of the humerus (medial side)


Action -


Ambulation/walking or digging


Innervation -


caudal pectoral nerves


Agonist: Superficial Pectorals


Antagonist: Brachiocephalicus

Brachiocephalicus

Attachment -

Origin: Mastoid Process and nuchal crest (skull)


Insertion: Proximal cranial surface of the humerus


Action -


w/ weight: flexes head laterally


w/o weight: extends and advances the limb


Antagonist - Deep Pectoralis


Agonist - Cleidocephalicus


Innervation - accessory nerve

Sternocephalicus (Attachments)

Attachments -

Origin: First cranial sternebrae


Insertion: Mastoid process, nuchal crest


Action -


w/ weight: flexes head down


w/o weight: same


Innervation - accessory nerve and ventral branches of cervical spinal nerves

Sterno-thyro-hyoideus

Attachment -


Origin: First cranial sternebrae


Insertion: Thyroid cartilage and hyoid apparatus


Action -


w/ weight: pulls down base of tongue, opens esophagus, lowers thyroid cartilage


Innervation -


ventral branches of cervical spinal nerves

Omotransversarius

Attachment -


Origin: Wing of atlas


Insertion: Middle distal third of scapula spine


Innervation -


Accessory nerve


Action -


w/ weight: flexes neck laterally


w/o weight: ambulation, brings limb cranially


Innervation -


Accessory nerve

Trapezius

Attachment -


Origin: Median raphe to nuchal crest


Insertion: Dorsal cranial spine of scapula


Innervation -


Accessory nerve


Action -


w/ weight: elevates scapula when walking


w/out weight: Abducts limb


Innervation -


Accessory nerve

Rhomboideus

Attachment -


Origin: Median raphe and nuchal crest


Insertion: Inside cranial scapula border


Action -


w/ weight: depresses scapula and elevates it with the trapezius


w/o weight: Abducts limb


Innervation -


Ventral branches of the cervical and thoracic spinal nerves

Latissimus dorsi

Attachment -


Origin: Lateral aspect of the ribs


Insertion: Teres major tuberosity


Action -


w/ weight: brings body forward, ambulation


w/o weight: draws limb joint caudally


Innervation -


thoracodorsal nerve

Serratus ventralis

Attachment -


Origin: Lateral aspect of the ribs, more ventral than the rhomboideus


Insertion: Cervical vertebrae, serrated face of the scapular


Action -


anti gravity in quadrupeds, attaches limb to the body


Innervation -


Ventral branches of cervical spinal nerves and the long thoracic nerve

Pectoro-antebrachialis (cats only)

Attachment -


Origin: lateral surface of manubrium


Insertion: fascia of forearm


Action -


w/o weight: adduct limb (swatting)