File:Blaisdell1914 fig21.jpg

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Fig. 21. Outlines of transverse sections of the oesophagus and pharynx, at different levels

Serially arranged. x 70. (Zeiss 0c. 3 ; B. & L., obj. 1 in.) Reduced to 0.33.

A, through the termination of the pharynx; B, through the transitional point; C and D, (esophagus slightly separated from the larynx; E to J, oesophagus contiguous to the trachea; K, immediately below the bifurcation oi the trachea; K to M, oesophagus in relation to the aorta, beyond which point the latter is too distant to be shown in the figures; N to X, oesophagus in relation with the nervi vagi (above N the latter is too distant to be shown) ; X, a short distance above the hiatus cesophageus.

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Pages where the terms "Historic" (textbooks, papers, people, recommendations) appear on this site, and sections within pages where this disclaimer appears, indicate that the content and scientific understanding are specific to the time of publication. This means that while some scientific descriptions are still accurate, the terminology and interpretation of the developmental mechanisms reflect the understanding at the time of original publication and those of the preceding periods, these terms, interpretations and recommendations may not reflect our current scientific understanding.     (More? Embryology History | Historic Embryology Papers)
Links: fig 1a | fig 1b | fig 2 | fig 3 | fig 4-12 | fig 13 | fig 14 | fig 15 | fig 16 | fig 17-20 | fig 21 |1914 Blaisdell | Carnegie stage 23


Blaisdell FE. Measurements on a human embryo 30 mm long. (1914) J Anat Physiol., 48(2): 182-209. PMID 17232990

Cite this page: Hill, M.A. (2024, February 28) Embryology Blaisdell1914 fig21.jpg. Retrieved from

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