FIGURE 112.2 A: Anatomic neck divisions and contents of zone III Zone III includes the area above the upper boundary of zone II B: Anatomic specimen demonstrating zone III relationships (B : From the National Library of Medicine The Visible Human Project® https://www.nlm.nih.gov/research/visible/visible_human.html Updated July 8, 2019 Accessed June 14, 2020 Originally published in: Spitzer VM, Whitlock DG National Library of Medicine Atlas of the Visible Human Male: Reverse Engineering of the Human Body 1st ed University of Colorado/Jones & Bartlett, 1998.)