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Development of the thyroid gland and related hyoid cartilages

(1) Diagrammatic representation of the developing thyroid of the frog in relation to the hyoid cartilages in early metamorphosis; (HCP) hyoid cartilage proper, (BH) basihyoid cartilage, (BB) basibranchial cartilage, (HB) hyobranchial cartilage, (1) approximate initial site of the thyroid anlage, (2) approximate position of the thyroid at the hindlimb bud stage, (3) approximate position of the thyroid at the fully differentiated hindlimb bud stage.

(2) Same as "1" except at later stages of metamorphosis; (4) Approximate position of the thyroid at forelimb emergence, (5) approximate position of the thyroid at the tail resorption stage.


D'Angelo and Charipper: 1939.

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Frog Development (1951): 1 Introduction | 2 Rana pipiens | 3 Reproductive System | 4 Fertilization | 5 Cleavage | 6 Blastulation | 7 Gastrulation | 8 Neurulation | 9 Early Embryo Changes | 10 Later Embryo or Larva | 11 Ectodermal Derivatives | 12 Endodermal Derivatives | 13 Mesodermal Derivatives | 14 Summary of Organ Appearance | 15 Glossary | 16 Bibliography | Figures


Rugh R. Book - The Frog Its Reproduction and Development. (1951) The Blakiston Company.

Cite this page: Hill, M.A. (2024, April 25) Embryology Rugh 146.jpg. Retrieved from

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current12:00, 25 April 2013Thumbnail for version as of 12:00, 25 April 20131,000 × 373 (46 KB)Z8600021 (talk | contribs){{Rugh1951 footer}} Category:Skull