Anatomy Atlases: Atlas of Human Anatomy in Cross Section: Section 2. Neck, Shoulders, Upper Arm, and Upper Thorax (Lungs)

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Atlas of Human Anatomy in Cross Section: Section 2. Neck, Shoulders, Upper Arm, and Upper Thorax (Lungs)

Plate 2.4

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

Upper Left Quadrant	Lower Left Quadrant	Lower Right Quadrant	Upper Right Quadrant
1. Laryngeal prominence 2. Rima glottidis, pars intercartilaginea 3. Pharynx, inferior constrictor m. 4. Thyrohyoid m. 5. Thyroid cartilage 6. Vertebra, C7 body 7. Omohyoid m. 8. Thyroid gland 9. Common carotid a. 10. Vagus nerve 11. Internal jugular v. 12. Cervical nerve, C8 13. Cervical nerve, C7 14. Transverse process, C7 15. Clavicle 16. Subclavius m. 17. Tendon m. subscapularis 18. Humerus, lesser tubercle 19. Scapula, acromion process 20. Articular process, T1	21. Infraspinatus m., insertion 22. Scapula, glenoid process 23. Suprascapular a., v., and nerve 24. Serratus anterior m. 25. Infraspinatus m. 26. Scapular spine 27. Scapula 28. Suprascapular a., v., and nerve 29. Deltoid m., fascial origin from scapular spine 30. Scapular spine 31. Supraspinatus m. 32. Scapula 33. Serratus anterior m. 34. Rhomboideus major m. 35. Semispinalis capitis m. 36. Vertebra, T1 vertebral arch	37. Supraspinous ligament 38. Vertebra, C7, spinous process 39. Trapezius m. 40. Splenius cervicis m. 41. Rhomboideus major m. 42. Semispinalis capitis m. 43. Rhomboideus minor m. 44. Multifidus m. 45. Longissimus capitis m. 46. Scapula 47. Scapular spine 48. Longissimus cervicis m. 49. Supraspinatus m. 50. Subscapularis m. 51. Infraspinatus m. 52. Scapula 53. Scapular notch, suprascapular a., v., or nerve 54. Deltoid m. 55. Suprascapular a., v., and nerve 56. Scapula, glenoid process 57. Serratus anterior m. 58. Humeral head	59. Costotransverse ligament 60. Tendon m. subscapularis 61. Rib 1 62. Clavicle 63. Vertebra, T1 lamina 64. Supraclavicular nerve 65. External jugular v. 66. Cervical nerve, C5 67. Cervical nerve, C4 68. Supraclavicular nerve 69. Vertebral a. 70. Internal jugular v. 71. Common carotid a. 72. Sternocleidomastoid m. 73. Inferior constrictor m., pars thyropharyngea 74. Transverse and oblique arytenoid mm. 75. Cricoid cartilage, lamina 76. Elastic cone 77. Arytenoid cartilage 78. Vocal ligament 79. Rima glottidis, pars intermembranacea

This section passes through the laryngeal prominence of the thyroid cartilage (1), rime glottidis (79), vocal ligament (78), arytenoid cartilage (77), elastic cone (76), cricoid cartilage (75), and the transverse and oblique arytenoid muscles (74). The laryngopharynx is closed (3). The inferior constrictor (73) is deep to the pharynx and arises from the oblique line of the thyroid cartilage to join its counterpart from the opposite side at the midline pharyngeal rapine. The section also cuts the seventh cervical (6) and the first thoracic vertebrae (63) and the first rib (61), which is seen for the first time. The thyroid gland (8) also makes its first appearance in this section.

The glenohumeral articulation is seen. The humeral head (58) fits the shallow depression in the glenoid process of the scapula (56). The tendon of subscapularis (17, 60) is seen inserting onto the humeral head as is the tendon of infraspinatus (21). Subscapularis inserts onto the lesser tubercle (18) and shaft of the humerus immediately below it. Infraspinatus inserts onto the middle facet of the greater tubercle of the humerus.

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