| 1
.
| Upper pointer: Clavicular branch of thoracoacromial artery Lower pointer: Axillary vein |
| 2
.
| Anterior jugular vein |
| 3
.
| Clavicular part pectoralis major muscle (cut across) |
| 4
.
| Sternocleidomastoid muscle (sternal origin) |
| 5
.
| Anterior supraclavicular nerve |
| 6
.
| Axillary lymph node (of subclavian group) |
| 7
.
| Sternocostal part pectoralis major muscle (cut across) |
| 8
.
| External intercostal muscle (in first intercostal space) |
| 9
.
| Internal intercostal muscle |
| 10
.
| Sternal angle |
| 11
.
| Costal cartilage II |
| 12
.
| Rib II |
| 13
.
| Upper pointer: Clavicle Lower pointer: Subclavius muscle (covered by coracoclavicular fascia) |
| 14
.
| Anterior lateral thoracic nerve |
| 15
.
| Pectoral branch of thoracoacromial artery |
| 16
.
| Pectoralis major muscle (reflected) |
| 17
.
| Area of axillary fossa |
| 18
.
| Pectoralis minor muscle (reflected) |
| 19
.
| Coracoclavicular fascia |
| 20
.
| Aberrant muscular slip |
| 21
.
| Axillary fascia |
| 22
.
| Pectoral fascia (cut along lateral border of pectoralis major and left in situ when muscle was reflected) |
| 23
.
| Thoracoepigastric vein |
| 24
.
| Lateral thoracic artery |
| 25
.
| Axillary lymph node (one of anterior pectoral group) |
| 26
.
| Fascia over latissimus dorsi muscle |
| 27
.
| Origins of pectoralis minor muscle |
