File:Mall1906 fig04.jpg

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Fig.4. Head of Embryo No. 284

Mesial view of the head of embryo No.284 (54 mm long). The centers of tke occipital bone surround the foramen magnum. Behind the maxilla may be seen the palate, the pterygoid, and the alisphenoid in order. Original figure was enlarged 2.5 diameters.

Online Editor Notes

  • the size of this specimen would occur during early fetal in Week 10.
  • vertebra - osteogenic collars early formation by endochondral ossification.

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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)
Ossification Centers in Human Embryos: Fig 1 Embryo No. 333 | Fig 2 Embryo No. 284 | Fig 3 Occipital Ossification | Fig 4 Embryo No. 284 Head | Fig 5 Embryo No. 300 Hand | Fig 6 Embryo No. 300 Leg | Table 1 Ossification Centers Month 2 | Table 2 Skull Ossification | Table 3 Rib Ossification | Table 4 Vertebra Ossification | Table 5 Vertebra Body Ossification | Table 6 Arm Ossification | Table 7 Leg Ossification | Franklin Mall | Bone Development Timeline


Mall FP. On ossification centers in human embryos less than one hundred days old. (1906) Amer. J Anat. 5:433-458.

Cite this page: Hill, M.A. (2024, June 22) Embryology Mall1906 fig04.jpg. Retrieved from

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