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. 2023 Dec 14;122(24):4686–4698. doi: 10.1016/j.bpj.2023.11.012

Figure 1.

Figure 1

Structure of the nasal cavities of the Arctic seal (Eb) and the subtropical seal (Mm). (a) The longitudinally sectioned CT reconstruction of the Arctic seal’s skull with maxilloturbinates (MTs) of length L in the anteroposterior direction (contained within the solid red line) and olfactory turbinates (OTs). The inhaled air passes from the nostrils (not visible) through an open, vestibular region (V), through the MTs, and then through the nasopharynx (N). (b) Cross-sectional CT images of MT of the Arctic seal (top) and the subtropical seal (bottom) in approximately the position marked by the red dashed line in (a). Scale bar, 50 mm. CT images are reproduced with permission of Mason et al. (14), Copyright 2020 Elsevier. To see this figure in color, go online.