Muscles of the lateral neck that move the head
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Created by:
cmarie_zee on August 22, 2011
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Muscles of the lateral neck that move the head
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8 terms
Terms | Definitions |
|---|---|
 Sternocleidomastoid (SCM) | O-Sternal Head: manubrium of sternum, Clavicular Head: medial third of clavicle I-Mastiod process of the Temporal Bone & lateral half of superior nuchal line of occipital bone. A-Bilaterally:Flex cervical portion of vertebral column, extend head at AO joint A-Unilateral: Laterally flex the neck and head to the same side and rotate the head to the opposite side as the contracting muscle. RMA: Elevate the sternum, during forced inhalation N.I-Accessory XI nerve, C2 & C3 |
| Anterior Scalene | O-Transverse processes of C3-C6 I-First rib A-Bilaterally:Right & left anterior scalene muscles elevate first ribs during deep inhalation. RMA: Flex cervical vertebrae A-Unilateral:Laterally flex & slightly rotate cervical vertebrae N.I-Cervical Spinal Nerves |
| Middle Scalene | O-Transverse Processes of C2-C7 I-First Rib A-Bilaterally:Right & left middle scalene muscles elevate first ribs during deep inhalation. RMA: Flex cervical vertebrae A-Unilateral:Laterally flex & slightly rotate cervical vertebrae N.I-Cervical Spinal Nerves |
| Posterior Scalene | O-Transverse Processes of C4-C6 I-Second Rib A-Bilaterally: Elevate second rib during deep inhalation RMA: Flex cervical vertebrae A-Unilaterally: laterally flex and slightly rotate cervical vertebrae N.I-Cervical Spinal nerves |
| The Sternocleidomastoid (SCM) divides the neck into... | Anterior and Posterior Triangles |
| The Anterior triangle is bordered by... | superiorly by the mandible inferiorly by the sternum medially by the cervical midline laterally by the anterior border of the SCM |
| The Posterior Triangle is bordered by... | Inferiorly by the clavicle anteriorly by the posterior border of the SCM posteriorly by the anterior border of the Trapezius muscle |
| What muscles are located in the anterolateral neck, deep to the SCM? | Anterior scalene Middle scalene Posterior scalene |
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