Head and Cervical Spine OIA

Vocabulary flashcards detailing the origins, insertions, and actions of muscles in the head, neck, and cervical spine.

Longus Capitis Origin

Anterior tubercles of transverse process of C3-C6

Longus Capitis Insertion

Inferior surface of basilar part of occipital bone

Longus Capitis Action

Flexes head

Longus Colli Insertion

C2-C4 vertebrae; Anterior tubercles of transverse processes C3-C6; Anterior Tubercle of Atlas

Longus Colli Origin

Vertebra C5-T3; Anterior tubercles of transverse processes of C3-C5 vertebrae

Longus Colli Action

Flexes cervical spine; laterally flexes cervical spine

Scalenus Anterior Origin

Anterior tubercles of transvers processes C3-C6

Scalenus Anterior Insertion

Scalene tubercle on 1st rib

Scalenus Anterior Action

Flexes cervical spine; Laterally flexes cervical spine

Scalenus Medius Origin

Posterior tubercles of transverse processes of C2-C7

Scalenus Medius Insertion

Superior surface of 1st rib (posterior to subclavian groove)

Scalenus Medius Action

Laterally flexes cervical spine

Scalenus Posterior Origin

Posterior tubercles of transverse processes of C4-C6

Scalenus Posterior Insertion

External surface of 2nd rib

Scalenus Posterior Action

Laterally flexes cervical spine

Sternocleidomastoid Origin

Anterior manubrium; Superior middle clavicle

Sternocleidomastoid Insertion

Mastoid process; Lateral superior nuchal line

Sternocleidomastoid Action

Flexes head; Contralaterally rotates head

Temporalis Origin

Temporal fossa

Temporalis Insertion

Coronoid process; Ramus of mandible

Temporalis Action

Elevates mandible; Retracts mandible

Masseter Origin

Zygomatic arch

Masseter Insertion

Coronoid process; Ramus of mandible

Masseter Action

Elevates mandible; Protrudes mandible; Retracts mandible

Lateral Pterygoid Origin

Infratemporal surface of greater wing of sphenoid; Lateral pterygoid plate

Lateral Pterygoid Insertion

Pterygoid fovea; Articular disc of TMJ

Lateral Pterygoid Action

Protrudes mandible; Side to side grinding

Medial Pterygoid Origin

Medial surface of lateral plate of pterygoid; Pyramidal process of palatine bone; Maxillary tuberosity

Medial Pterygoid Insertion

Medial surface of mandibular angle

Medial Pterygoid Action

Elevates mandible; Protrudes mandible; Side to side grinding

Obliquus Inferior Capitis Origin

Spine of axis

Obliquus Inferior Capitis Insertion

Transverse process of atlas

Obliquus Inferior Capitis Action

Ipsilaterally rotates atlas

Obliquus Superior Capitis Origin

Transverse process of atlas

Obliquus Superior Capitis Insertion

Lateral inferior nuchal line

Obliquus Superior Capitis Action

Extends head

Rectus Posterior Major Capitis Origin

Spine of axis

Rectus Posterior Major Capitis Insertion

Middle inferior nuchal line

Rectus Posterior Major Capitis Action

Extends head

Rectus Posterior Minor Capitis Action

Extends head

Rectus Posterior Minor Capitis Insertion

Medial inferior nuchal line

Rectus Posterior Minor Capitis Origin

Tubercle of posterior arch of atlas