The<unk>  lies in front of the neck of the first rib, and posterior to the common carotid artery. The vertebral artery lies anterior to the ganglion as it has just originated from the subclavian artery. After passing over the ganglion, the artery enters the vertebral foramen and lies posterior to the anterior tubercle of C6 (Chassaignac's tubercle).
Stellate ganglion
Ciliary ganglion
Olfactory trigone
Middle cervical ganglion
Medulla 
Medulla
Subfornical organ
Cortical minicolumn