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Anatomy Atlases: Atlas of Human Anatomy in Cross Section: Section 5. Lower Thorax (Lungs) and Abdomen

Atlas of Human Anatomy in Cross Section: Section 5. Lower Thorax (Lungs) and Abdomen

Plate 5.2

Ronald A. Bergman, Ph.D., Adel K. Afifi, M.D., Jean J. Jew, M.D., and Paul C. Reimann, B.S.
Peer Review Status: Externally Peer Reviewed


Plate 5.2

Upper Left Quadrant

Lower Left Quadrant

Lower Right Quadrant

Upper Right Quadrant

1. Falciform ligament of liver
2. Transversus thoracis m.
3. Peritoneal cavity
4. Ribs
5. Pectoralis major m.
6. Lung, right middle lobe medial segment
7. Diaphragm
8. Pleural cavity
9. Serratus anterior m.
10. Liver, caudate lobe

11. Liver, right lobe
12. Serratus anterior m. and rib 8
13. Coronary ligament of liver and lung, right lower lobe anterior basal segment
14. Coronary ligament of liver and inferior vena cava
15. Rib 9
16. Lung, right lower lobe lateral basal segment
17. Diaphragm
18. Rib 10
19. Suprarenal gland
20. Abdomen and perirenal fat
21. Lung, right lower lobe posterior basal segment
22. Thoracic duct
23. Azygos v.
24. Intervertebral disk, T10 T11
25. Superior articular process, T1 1, and zygapophyseal joint
26. Spinal cord and denticulate ligament

27. Supraspinous ligament
28. Vertebral arch, T10, and internal vertebral venous plexus
29. Thoracic aorta
30. Rib 11 and hemiazygos v.
31. Longissimus m.
32. Pleural cavity
33. Pleural cavity
34. Rib 10 and lung, left lower lobe posterior basal segment
35. Diaphragm
36. Inferior phrenic a. and v.
37. Latissimus dorsi m.
38. Rib 9 and spleen
39. Lung, left lower lobe anterior medial basal segment
40. Lung, left upper lobe (lingula) inferior segment

41. Serratus anterior m. and rib 8
42. Diaphragm
43. Stomach and esophageal stomach junction
44. Rib 7
45. Liver, left lobe (hepatic appendix, beaver tail)
46. Colon
47. Lung, left upper lobe (lingula) superior segment
48. Pectoralis major m. and diaphragm
49. Thoracic anterior mediastinal fat
50. Rib 5
51. Internal thoracic a. and v.
52. Rib 6
53. Abdomen and rectus abdominis m.
54. Hepatogastric ligament
55. Xiphoid process, with perforation

This transitional section passes through both thorax and abdomen and the tenth thoracic vertebral disk. It passes through the arch of the tenth thoracic vertebra (28) and the superior articular process of the eleventh vertebra (25). It cuts the fifth (50), sixth (52), seventh (44), eighth (41), ninth (38), tenth (34), and eleventh (30) ribs.

The right suprarenal gland (19) and the serratus anterior muscle (12, 41) appear for the first time, and pectoralis major muscle (5, 48) is not seen below this level. The thoracic aorta (29) is seen flanked by the hemiazygos (30) and azygos (23) veins.

The cut passes through the esophageal stomach junction (43) and it grazes the superficial layers of the colon (46). The spleen (38) can be seen adjacent to the stomach (43).

This cut includes portions of the diaphragm (7, 17, 35, 42, 48). The coronary (13, 14), falciform (1), and hepatogastric (54) ligaments are also seen.

This section includes portions of the lungs located in the recesses between the dome-shaped diaphragm and body wall. The following segments of the lungs have been identified: left upper lobe (lingula) superior (47), left upper (lingula) inferior (40), left lower lobe anterior medial basal (39), left lower lobe posterior basal (34), right lower lobe posterior basal (21), right lower lobe lateral basal (16), right lower lobe anterior basal (13), and right middle lobe medial (6).

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