Muscles of the Back and Craniocervical Regions: Muscles of the Craniocervical Region Flashcards
Splenius Muscles Proximal Attachment
Splenius cervicis and capitis: Ligamentum nuchae and spinous processes of C7-T4 vertebrae
Splenius Muscles Distal Attachment
Splenius Cervicis: Posterior tubercles of the transverse processes of C1-C3 vertebrae
Splenius Capitis: Mastoid process and lateral end of the superior nuchal line
Splenius Muscles Innervation
Posterior rami of spinal nn. C2-C6
Splenius Muscles Action
Unilaterally: Rotates the head/neck to the same side Laterally flexes the head/neck Bilaterally Extends the head/neck
Rectus Capitis Posterior Major Proximal Attachment
Spinous process of C2
Rectus Capitis Posterior Major Distal Attachment
Lateral part of the inferior nuchal line
Rectus Capitis Posterior Major Innervation
Suboccipital n. (posterior ramus of C1)
Rectus Capitis Posterior Major Action
Extends the head
Rotates the head to the same side
Rectus Capitis Posterior Minor Proximal Attachment
Posterior tubercle of C1
Rectus Capitis Posterior Minor Distal Attachment
Medial part of the inferior nuchal line
Rectus Capitis Posterior Minor Innervation
Suboccipital n. (posterior ramus of C1)
Rectus Capitis Posterior Minor Action
Extends the head
Superior Oblique Proximal Attachment
Transverse process of C1
Superior Oblique Distal Attachment
Occipital bone between the inferior and superior nuchal line
Superior Oblique Innervation
Suboccipital n. (posterior ramus of C1)
Superior Oblique Action
Extends the head
Inferior Oblique Proximal Attachment
Spinous process of C2
Inferior Oblique Distal Attachment
Transverse process of C1
Inferior Oblique Innervation
Suboccipital n. (posterior ramus of C1)
Inferior Oblique Action
Rotates C1 to the same side