File:Boyd1950 fig06.jpg

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Fig. 6. Sections through developing fourth pouch of human embryos

To show relationship between “ventral component ” of this pouch and the differentiating thyroid tissue. (x 450.)

(a) Left side 13 mm. human embryo

(b) Right side 17 mm. human embryo;

(c) Left side 17 mm. human embryo

(a') Left side 19 mm. human embryo.

Note different appearance presented by the “ventral component” of the fourth pouch. In (b) and (c) it appears to be more intimately related to median thyroid tissue than in the other sections.

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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 1 | fig 2 | fig 3a | fig 3b | fig 4 | fig 5 | fig 6 | fig 7 | fig 8 | fig 9 | fig 10 | 1950 Boyd | Thyroid | Parathyroid | Thymus‎ | Historic Papers


Boyd JD. Development of the thyroid and parathyroid glands and the thymus. (1950) Ann R Coll Surg Engl. 7(6): 455-71. PMID 14790564

Cite this page: Hill, M.A. (2024, June 23) Embryology Boyd1950 fig06.jpg. Retrieved from

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© Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G

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