File:Streeter-plate05.jpg: Difference between revisions

Plate 5. The developmental alterations in the vascular system of the brain of the human embryo

Left profile view of a wax-plate reconstruction of the blood-vessels of the brain in a human embryo 43 mm long (Carnegie Collection, No. 886). Enlarged 8 diameters. (original print version)

• The vascular architecture is at this stage beginning to approximate the adult condition, although the whole tentorial region retains its embryonic character, due to which the marked subsequent migration of the transverse sinus is possible.
• It will be noted that the sigmoid portion of the sinus is fairly well established.

--Mark Hill 09:39, 17 February 2011 (EST) Post-Embryonic based upon CRL

Plate links: Plate 1 - embryos 4 mm to birth | Plate 2 - embryo 4 mm | Plate 3 - embryo 11.5 mm | Plate 4 - embryo 21 mm | Plate 5 - embryo 43 mm

Historic Disclaimer - information about historic embryology pages

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)

Reference

The Developmental Alterations in the Vascular System of the Brain of the Human Embryo Contributions to Embryology Carnegie Institution No.24 by George L. Streeter, with five plates and twelve text-figures (1921).