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Fig. 481. Dorsal view of embryo of albatross, showing amnion covering greater part of embryo


The amniotic cavity is filled with fluid, the liquor amnii, the origin of which is uncertain. In it the embryo floats freely, attached only by its ventral connection with the yolk. At about the fifth day of incubation rhythmical contractions of the amnion begin. These are apparently due to the development of contractile fibers in its mesodermic tissue and give to the embryo a regular oscillating motion.

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Bailey FR. and Miller AM. Text-Book of Embryology (1921) New York: William Wood and Co.

Cite this page: Hill, M.A. (2024, February 24) Embryology Bailey481.jpg. Retrieved from

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current00:39, 2 February 2011Thumbnail for version as of 00:39, 2 February 2011842 × 752 (109 KB)S8600021 (talk | contribs){{Template:Bailey 1921 Figures}} Category:Neural Category:Chicken