| 1
.
| Sternocleidomastoid muscle (cut off) |
| 2
.
| Ascending cervical artery |
| 3
.
| Transverse colli artery |
| 4
.
| Anterior scalene muscle (cut off note remnant of insertion of this muscle on first rib slightly lower in view) |
| 5
.
| Branches of costocervical trunk (upper pointer, deep cervical artery; lower pointer, supreme intercostal artery) |
| 6
.
| Inferior trunk brachial plexus |
| 7
.
| Rib I (cut off) |
| 8
.
| Thoracic nerve |
| 9
.
| Rami intercostal nerve I |
| 10
.
| Sympathetic trunk |
| 11
.
| Ramus communicans |
| 12
.
| Rib II |
| 13
.
| Intercostal nerve II |
| 14
.
| Innermost intercostal muscle |
| 15
.
| Common carotid artery |
| 16
.
| Middle cervical ganglion |
| 17
.
| Vagus nerve right |
| 18
.
| Thyrocervical trunk |
| 19
.
| Vertebral artery |
| 20
.
| Trachea |
| 21
.
| Upper pointer: Internal thoracic artery (cut off) Lower pointer: Ansa subclavia |
| 22
.
| Stellate ganglion |
| 23
.
| Posterior mediastinal lymph node |
| 24
.
| Anterior longitudinal ligament |
| 25
.
| Esophagus |
| 26
.
| Thoracic cardiac nerve |
| 27
.
| Branch posterior intercostal artery (to esophagus, trachea) |
| 28
.
| Intercostal vein III |
