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Lateral drawings of a 7- to 8-week embryo (A) and an 8- to 10-week fetus (B) show that the opening of the external auditory canal remains stationary but appears to rise because the progressive elongation of the jaw creates this impression. (Modified with permission from Netter's Atlas of Human Embryology. Edited by Cochard, L.R., PhD. 2002. Icon Learning Systems, Teterboro, New Jersey, Figure 9.27. Netter Illustrations from www.netterimages.com, ©Elsevier Inc, All rights reserved) .
