File:Keibel Mall 2 417.jpg

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Fig. 417. Reconstruction of the arterial system in a human embryo 4.9 mm long lateral view

After Ingalls NW. Description of a human embryo of 4.9 mm (Beschreibung eines menschlichen Embryos von 4.9 mm). (1907) Arch. f. mik. Anat., 70: 506-576. p. 530.

A.c, a. cceliaca; A.c. a., a. cerebralis ant.; A.c.s., a. caudalis sin.; Ag., optic vesicle; Al., allantois; A.m.i., a. mes.inf.; A. o., a. ophthalmica; A. omphal., a. omphalomesenterica (with three roots); A. p., a. pulmonalis; A.s., a. subclavia; A.u.s., a. umb. sin.; A. v., a.vertebralis; B. 1,2,8,4,6, aortic arches; C.a.l, first cervical artery; Cd., caudal intestine; D.p., dorsal pancreas; D.i., ductus vitello-intestinalis; Gb., gall-bladder; Ha. , hypoglossus artery; lb., inselbildung; La., lunganlage; M., stomach; Oes., oesophagus; T. a., truncus arteriosus; UK., lower jaw; V., questionable union between the a. vertebralis and a. car. int. (N. T. 14. ) the aorta by four distinct roots. It will be noticed that all these branches are much above their location in the adult, as can be seen by comparing them with the dorsal segmentals opposite, and it is not indeed until the embryo attains a length of from 16 to 20 millimetres that their definitive position is reached.

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XVIII. Development of Blood, Vascular System and Spleen: Introduction | Origin of the Angioblast and Development of the Blood | Development of the Heart | The Development of the Vascular System | General | Special Development of the Blood-vessels | Origin of the Blood-vascular System | Blood-vascular System in Series of Human Embryos | Arteries | Veins | Development of the Lymphatic System | Development of the Spleen


Keibel F. and Mall FP. Manual of Human Embryology II. (1912) J. B. Lippincott Company, Philadelphia.

Cite this page: Hill, M.A. (2024, April 22) Embryology Keibel Mall 2 417.jpg. Retrieved from

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