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 2.1

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. Transversus menti m. 2. Oral cavity 3. Orbicularis oris m. 4. Hypoglossal nerve 5. Mylohyoid m. 6. Hyoglossus m. 7. Submandibular gland 8. Lingual nerve 9. Submandibular gland 10. Platysma m. 11. Hyoid bone, greater horn 12. Intervertebral disk, C4, fibrocartilage 13. Longus colli m. 14. Cervical sympathetic trunk 15. Vagus nerve 16. Internal jugular v. 17. Vertebral a. 18 Third cervical nerve root	19. Middle scalene m. 20. Vertebra, C5 transverse process 21. Posterior scalene m. 22. Acromion of scapula 23. Deltoid m. 24. Subarachnoid space 25. Spinal cord, lateral white column 26. Spinal cord, ventral gray column 27. Spinal cord, dorsal white column 28. Interscapular fat 29. Semispinalis m.	30. Multifidus m. 31. Semispinalis cervicis m. 32. Splenius capitis m. 33. Semispinalis capitis m. 34. Vertebra, C5 transverse process 35. Longissimus cervicis and capitis mm. 36. Trapezius m. 37. Levator scapulae m. 38. Deltoid m. 39. Superficial (fatty) fascia 40. Greater auricular nerve	41. Spinal accessory nerve 42. Sternocleidomastoid m. 43. Internal jugular v. 44. Vertebral a. 45. Internal carotid a. 46. Lymph node 47. External jugular v. 48. Middle pharyngeal constrictor m 49. Stylohyoid m. 50. Anterior facial v. 51. Submandibular gland 52. Lingual a. 53. Facial a. 54. Inferior alveolar nerve in mandibular canal 55. Platysma m. 56. Styloglossus m. 57. Oral pharynx 58. Mandible 59. Genioglossus m. 60. Upper lip

This section passes through the oral cavity (2), genioglossus muscle (59), mandible (58), oral pharynx (57), fifth cervical vertebra (20, 34), fourth cervical intervertebral disk (12), cervical spinal cord (25, 26, 27), and the trapezius muscle (36).

The following important arterial vessels are identified: facial (53), lingual (52), internal carotid (45), and the vertebral (17, 44).

The anterior facial (50), external jugular (47), and internal jugular (16, 43) veins are seen.

Cranial nerves 5, trigeminal mandibular division branch (8); 11, spinal accessory (41) 10, vagus (15); and 12, hypoglossal (4) can be identified. In addition, the cervical sympathetic trunk (14) is located between the internal carotid artery and internal jugular vein (16).

The inferior alveolar (54), lingual (8), and greater auricular (40) nerves, third cervical nerve root (18), and the cervical enlargement of the spinal cord (25, 26, 27) are identified.

Parts of the submandibular gland are seen bilaterally (7, 9, 51).

Muscles of the head and neck include the genioglossus (59), styloglossus (56), platysma (10, 55), stylohyoid (49), middle pharyngeal constrictor (48), sternocleidomastoid (42), semispinalis capitis (33), semispinalis cervicis (31), multifidus (30), posterior scalene (21), middle scalene (19), longus colli (13), hyoglossus (6), mylohyoid (5), orbicularis oris (3), and transversus menti (1) muscles.

Shoulder muscles include the deltoid (23, 38), levator scapulae (37), and trapezius (36).

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