Spry Juncture, LLC
How to Evolve Gracefully
Splenius Cervicis
Region
Origin & Insertion
['Origin: Spinous processes of T3–T6', 'Insertion: Transverse processes of C1–C3']
Synergistic Muscles
['Splenius capitis', 'Semispinalis']
Joints
['Cervical vertebrae']
Primary Actions
['Neck extension', 'Ipsilateral rotation and side bending']
Nerve & Spinal Segment
Dorsal rami of lower cervical spinal nerves
No plexus; segmental from cervical spine
Interesting
Works in tandem with splenius capitis. [Saladin]
Reversal of Action
Anchor cervical spine while raising upper thorax
Common Dysfunctions
Neck pain with rotation, cervicogenic headaches
How to Stretch
Rotate and flex head to opposite side.
Trigger Points
How to Strengthen
Resisted rotation exercises.
Concentric Action
Extend and rotate neck to same side
Applications:
Strengthens deep extensors to combat head-forward posture
Eccentric Action
Control return from neck extension/rotation
Isotonic Action
Neck extension over foam roller
Related Conditions
['Cervical facet syndrome', 'Tech neck']
Isometric Action
Hold neck extended or rotated
Exercise Ideas
['Prone cervical lifts', 'Isometric head turns', 'Theraband neck rotation']