Canine Muscles: Origins, Insertions, Actions and Origins

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  • Created by: katdo
  • Created on: 06-03-18 19:02
Masseter Origin
Zygomatic arch.
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Masseter Insertion
Masseteric fossa of the mandible.
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Masseter Action
Raises the mandible.
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Masseter Innervation
Masticatory nerve, branch of the mandibular nerve.
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Trapezius Origin
Dorsal median raphe of the neck from C3 to spinous processes of T1-9.
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Trapezius Insertion
(c) Dorsal two-thirds of scapular spine; (t) dorsal third of scapular spine.
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Trapezius Action
Draws scapular dorsally. (c) craniodorsally; (t) caudodorsally.
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Trapezius Innervation
Dorsal branch of accessory nerve.
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Cleidocervcalis Origin
Dorsal median raphe of neck cranial to trapezius.
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Cleidocervicalis Insertion
Clavicular intersection.
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Cleidocervicalis Action
Draws thoracic limb forward.
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Cleidocervicalis Innervation
Dorsal branch of accessory nerve.
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Rhomboideus Origin
Nuchal crest; dorsal median raphe of neck from T2 to T1; cranial thoracic spines.
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Rhomboideus Insertion
Medial surface of scapular cartilage.
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Rhomboideus Action
Fixation of thoracic limb, elevate scapula and draws it forward.
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Rhomboideus Innervation
Ventral branches of cervical nerves.
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Omotransversarius Origin
Acromion of scapular.
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Omotransversarius Insertion
Wing of atlas
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Omotransversarius Action
Draws thoracic limb forward; bends neck to one side.
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Omotransversarius Innervation
Ventral branch of fourth cervical nerve.
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Serratus (cervical and thoracic) Origin
Transverse processes of C1-7; Ribs 1-7.
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Serratus (cervical and thoracic) Insertion
Facies serrate of scapula.
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Serratus (cervical and thoracic) Action
Supports trunk, raises neck; axillary inspiratory muscle when weight-bearing.
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Serratus (cervical and thoracic) Innervation
Ventral branches of cervical nerve; long thoracic nerve.
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Supraspinatus Origin
Supraspinous fossa and scapular spine.
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Supraspinatus Insertion
Greater tubercle of the humerus.
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Supraspinatus Action
Extends and fixes shoulder.
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Supraspinatus Innervation
Suprascapular nerve.
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Infraspinatus Origin
Infraspinous fossa and scapular spine.
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Infraspinatus Insertion
Infraspinatus surface of humerus.
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Infraspinatus Action
Flexor and abductor of shoulder.
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Infraspinatus Innervation
Suprascapular nerve.
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Superficial Pectorals (anterior, transverse and thoracic) Origin
Manubrium and cranial part of sternum.
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Superficial Pectorals (anterior, transverse and thoracic) Insertion
Crest of greater tubercle.
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Superficial Pectorals (anterior, transverse and thoracic) Action
Trunk-limb attachment; adductor, protractor and retractor of thoracic limb.
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Superficial Pectorals (anterior, transverse and thoracic) Innervation
Cranial pectoral nerve.
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Long and Lateral Head of Triceps Brachii Origin
(long) Caudal margin of scapular; (lat) proximal lateral humerus.
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Long and Lateral Head of Triceps Brachii Insertion
Olecranon.
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Long and Lateral Head of Triceps Brachii Action
Extends elbow; (long) flexes shoulder.
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Long and Lateral Head of Triceps Brachii Innervation
Radial nerve.
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Biceps Brachii Origin
Supraglenoid tubercle of scapula.
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Biceps Brachii Insertion
Radial tuberosity and proximomedial ulna.
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Biceps Brachii Action
Flexes elbow.
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Biceps Brachii Innervation
Musculocutaneous nerve.
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Deltoideus Origin
Clavicular intersection; scapular spine by aponeurosis; acromion.
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Deltoideus Insertion
Humeral crest; deltoid tuberosity.
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Deltoideus Action
Flexes shoulder, draws limb forward.
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Deltoideus Innervation
Axillary nerve.
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Latissimus Dorsi Origin
Thoracolumbar fascia.
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Latissimus Dorsi Insertion
Teres major tuberosity
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Latissimus Dorsi Action
Draws thoracic limb caudally, flexes shoulder, draws trunk forward.
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Latissimus Dorsi Innervation
Thoracodorsal nerve.
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Longissimus Costarum (iliocostalis) Origin
Ilium; adjacent ribs several segments caudal to rib of insertion; transverse process of C7.
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Longissimus Costarum (iliocostalis) Insertion
Transverse processes of lumbar vertebrae and caudal ribs; caudal margin of ribs cranial to ribs of origin; transverse process of C7.
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Longissimus Costarum (iliocostalis) Action
Fixes lumbar vertebrae and ribs, erects and laterally bends vertebral column; draws ribs caudally in expiration; draws ribs cranially in inspiration.
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Longissimus Dorsi Origin
Spinous processes of the sacral, lumbar and thoracic vertebrae; wing of ilium; transverse processes of thoracic vertebrae; articular processes of cervical vertebrae.
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Longissimus Dorsi Insertion
Transverse and accessory processes of lumbar and thoracic vertebrae; ribs at the angle; transverse processes of cervical vertebrae; mastoid process of temporal bone.
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Longissimus Dorsi Action
Fixes and extends vertebral column; erects upper body; elevates head and neck; laterally flexes trunk and neck.
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Longissimus Dorsi Innervation
Dorsal branches of lumbar, thoracic and cervical spinal nerves.
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Gluteal Medius Origin
Gluteal fascia and wing of ilium.
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Gluteal Medius Insertion
Trochanter major.
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Gluteal Medius Action
Extends hip, draws limb caudally and outward.
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Gluteal Medius Innervation
Cranial gluteal nerve.
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Biceps Femoris Origin
Tuber ischii sacrotuberous ligament.
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Biceps Femoris Insertion
Patellar ligament and tibial tuberosity; cranial margin of tibia; crural fascia; calcaneus tuberosity.
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Biceps Femoris Action
Extends hip, stifle and tarsal joints. Flexes stifle and abducts the limb when not weight-bearing.
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Biceps Femoris Innervation
Muscular branch of ischiadic nerve; caudal gluteal nerve.
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Semitendinosus Origin
Tuber ischii.
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Semitendinosus Insertion
Medial surface of tibia; calcaneus tuberosity with tarsal tendon of gracilis.
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Semitendinosus Action
Extends hip, stifle and tarsal joints. Flexes stifle, draws limb medially and caudally when not weight bearing.
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Semitendinosus Innervation
Muscular branch of ischiadic nerve.
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Semimembranosus Origin
Tuber ischii.
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Semimembranosus Insertion
Medial condyles of femur and tibia.
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Semimembranosus Action
Extends hip, stifle and tarsal joints. Flexes stifle, draws limb medially and caudally when not weight-bearing.
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Semimembranosus Innervation
Muscular branch of ischiadic nerve
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Vastus Lateralis Origin
Craniolateral and craniomedial at femur.
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Vastus Lateralis Insertion
Tibial tuberosity by patellar ligament.
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Vastus Lateralis Action
Extends stifle, fixes the limb, flexes hip.
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Vastus Lateralis Innervation
Femoral nerve.
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Gracilis Origin
By aponeurosis with symphysial tendon to pelvic symphysis.
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Gracilis Insertion
Medial crural fascia; calcaneus tuberosity by medial calcanean tract.
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Gracilis Action
Adducts limb; extends the tarsal joint. Extends stifle when weight-bearing.
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Gracilis Innervation
Obturator nerve.
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Pectineus Origin
Iliopubic eminence.
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Pectineus Insertion
Medial lip of the facies aspera.
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Pectineus Action
Adducts limb, flexes hip.
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Pectineus Innervation
Obturator nerve.
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Gastrocnemius Origin
Distal femur; medial and lateral supracondylar tuberosities.
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Gastrocnemius Insertion
Calcaneus tuberosity.
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Gastrocnemius Action
Extends tarsal joint; flexes stifle.
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Gastrocnemius Innervation
Tibial nerve.
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Iliopsoas Origin
Vertebral ends of ribs 12 and 13; transverse processes of cranial lumbar vertebrae. Sacropelvic surface of ilium.
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Iliopsoas Insertion
Trochanter major.
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Iliopsoas Action
Flexes hip; draws limb forward; supinator of hip; stabilises vertebral column.
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Iliopsoas Innervation
Ventral branches of lumbar spinal nerves
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Other cards in this set

Card 2

Front

Masseteric fossa of the mandible.

Back

Masseter Insertion

Card 3

Front

Raises the mandible.

Back

Preview of the back of card 3

Card 4

Front

Masticatory nerve, branch of the mandibular nerve.

Back

Preview of the back of card 4

Card 5

Front

Dorsal median raphe of the neck from C3 to spinous processes of T1-9.

Back

Preview of the back of card 5
View more cards

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