1
.
| Lateral suspensory ligament of thyroid gland (cut off) |
2
.
| Internal jugular vein |
3
.
| Phrenic nerve (split into several trunks) |
4
.
| Trachea |
5
.
| Anterior branch superior thyroid artery |
6
.
| Principal termination of lymphatic trunks in internal jugular vein |
7
.
| Secondary termination of lymphatic trunks in subclavian vein |
8
.
| Subclavian vein (retracted anteriorly) |
9
.
| Inferior thyroid vein (cut off) |
10
.
| Thymus |
11
.
| Brachiocephalic vein left |
12
.
| Sternohyoid muscle (cut across) |
13
.
| Ascending cervical artery |
14
.
| Superficial cervical artery |
15
.
| Vertebral vein |
16
.
| Middle scalene muscle |
17
.
| Brachial plexus (anterior and posterior divisions of superior trunk) |
18
.
| Thyrocervical trunk |
19
.
| Transverse scapular artery |
20
.
| Subclavian artery |
21
.
| Anterior scalene muscle |
22
.
| Vertebral vein |
23
.
| Internal thoracic (mammary) artery |
24
.
| Fascia covering cupula pleurae |
25
.
| Rib I |
26
.
| Costoclavicular ligament |