Cervical Extensor Muscles Flashcards
Name the 9 cervical extensors
Lavator scapulae
Upper trapezius
Erector spinae
Splenius cervicis
Splenius capitis
Rectus capitis posterior major & minor
Obliquus capitis superior & inferior
Name the proximal and distal attachment sites for the Levator scapulae muscle
Proximal
Upper proportion of the medial border of the scapular
Distal
Transverse processes of C1 to C4
Name the nerve that supplies the levator scapulae muscle
Dorsal scapular nerve C4-5 & anterior rami C3-4
What actions does the levator scapulae do
Elévales scapula
Cervicales extensiones (bilateral)
Cervical side flexion (unilateral)
Name the proximal & distal attachments for the upper trapezius
Proximal
Superior nuchal line
External occipital protuberance
Ligamentum nuchae
Distal
Lateral 1/3 of clavicle
What nerve supplies the upper traps
Accessory nerve (cranial nerve 6)
Name the actions of the upper traps
Scapula elevation
Cervical side flexion (unilateral)
Cervical extension (bilateral)
Name the erector spinae muscles from medial to lateral
Spinalis
Longissimus
Iliocostalis
Name the attachments of the iliocostalis
Associated with costal elements
Common origin
Rib angles
Transverse processes of lower cervical vertebrae
Name the attachments for longissimus
Common origin
Associated with transverse processes throughout the spine
Name the attachments of the spinalis
Most medial
Interconnects spinous processes of adjacent vertebrae
Often absent in the cervical region
Associated with semispinalis capitis
What are the actions of erector spinae
Spinal extension (bilateral)
Spinal side flexion (unilateral)
Cervical rotation (unilateral)
Name the proximal & distal attachments of the splenius cervicis
Proximal
Spinous processes T3-6
Distal
Transverse processes C1-3
What nerve supplies the splenius cervicis
Posterior rami lower cervical nerves
What actions do the splenius cervicis do
Cervical extension (bilateral)
Ipsilateral cervical rotation (unilateral)
Name the proximal & distal attachments of the splenius capitis
Pócimas
Lower 1/2 ligamentum nuchae
Spinous processes C7-T4
Distal Transverse
Mastoid process
Skull inferior to lateral 1/3 superior nuchal line
Nerve supply of the splenius capitis
Posterior rami middle cervical nerves
Actions of the splenius capitis
Cervical extension (bilateral)
Ipsilateral cervical rotation (unilateral)
