Lateral Cervical Region Superficial temporal vein Occipital vein Maxillary vein 2 Triangles: Retromandibular vein: Posterior auricular vein Posterior division Anterior division Splenius >Occipital Triangle Facial vein Trapezius Common facial vein Levator scapulae >Omoclavicular Spinal accessory nerve (CN XI) Sternocleidomastoid Middle and posterior scalene- Triangle External jugular vein(EJV) Cervicodorsal vein- Communicating branch Omohyoid Internal jugular vein(IJV) Anterior jugular vein By omohyoid Suprascapular vein Brachiocephalic vein A Lateral view Subclavian vein Lateral cervical region.A.Superficial veins of right side of neck.Lateral Cervical Region Occipital Triangle Omoclavicular Triangle By omohyoid 2 Triangles: