Anatomy All except one is true regarding Suboccipital triangle A Semispinalis capitis forms roof of suboccipital triangle B Rectus capitis posterior major and minor form boundaries of suboccipital triangle C Posterior atlantooccipital membrane forms floor of the triangle D It contains 3rd part of vertebral artery 💡 Explanation All except one is true regarding Suboccipital triangle ✓ Correct Answer: B. Rectus capitis posterior major and minor form boundaries of suboccipital triangle