The small side head flexor
Rectus capitis lateralis · musculus rectus capitis lateralis
A tiny muscle between the atlas and skull that tilts the head to the side.
What it does
This short muscle runs from the side of the atlas up to the base of the skull. It tilts the head towards the shoulder on the same side and helps stabilise the joint between the skull and the first vertebra.
Surprising fact
It sits right next to the jugular vein as the vein leaves the skull, making it a landmark for surgeons working at the base of the skull.
Why it matters
Together with the other small muscles at the top of the neck, it keeps the head balanced on the spine.
Nearby
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Sources
Drafted with AI help; awaiting a human fact-check against these sources.
Open in the 3D atlas · Suggest a correction · Not medical advice.
3D models: Z-Anatomy & BodyParts3D (CC BY-SA 4.0 / 2.1 JP). Card text CC BY 4.0.