Lesson 1-4 Muscles Review flashcards |

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Rectus Capitus

Origin: Transverse process of C3-C5. Insertion: Ventral surface of the occipital bone of skull. Flexes poll. stabilizes the upper neck.

Splenius

Originates from T3-T5, inserts on the nuchal crest

Brachiocephalicus

Originates at temporal bone, inserts on humerus.
Pulls forelimb forward, raises the scapula.

Sternocephalicus

Originates from the sternum; Inserts into the caudal side of the mandible. Lowers head.

Cervical Serratus Ventralis

Origin: Transverse process of C3-C7. Insertion: Craniomedial upper third of the scapula. Brings scapula forward. Raises neck. Suspends and stabilizes. May assist during inspiration (breathing).

Trapezius

Originates on dorsal side of the neck, near poll; Inserts on the spine of the scapula. Raise shoulder.

Masseter

Cheek muscle; moves jaw open and closed

Rhomboideus

Originates from the nuchal ligament; Inserts on the medial scapular cartilage, beneath Traps. Raise shoulder towards head and raise neck upwards.

Rectus Capitus Lateralis

Originates on spinous process of axis; Inserts into occipital bone.

Multifidus

Originates on C4, C5, T1; Inserts into the spinous and articular processes of the cervical vertebrae.

Omotransversarius

Similar to brachiocephalicus

Oblique Capitus

...

Latissimus Dorsi

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Deltoid

Origin: Posterior border and spine of the scapula. Insertion: Deltoid tuberosity of the crest of the humerus bone and brachial fascia. Assists in protraction of the limb. Stabilizer of shoulder joint.

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