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ID 19020
Eprint ID
19020
FullText URL
Thumnail 70_2033.pdf 4.16 MB
Title Alternative
Vascular Construction of the Bone Marrow in Human Fetus Part 1. Blood Vessels in the Bone Marrow of Thoracic Vertebra
Author
Nakazawa, Takeshi
Abstract
By preparing transparent tissue specimens by Spalteholz and stained tissue specimens with dye injection into the bone marrow vessels of thoracic vertebra in 60 human fetuses over two months old, the author studied development of blood vessels in the bone marrow and obtained the following resutls: 1. Ossification in the body of a vertebra commences with entochondrostosis, while that of the arch of a vertebra with exochondrostosis. 2. A pair of large blood vessels entering the cartilage canal from the foramen vertebrae grow into nutrient artery and vein. After entering into the bone marrow the nutrient artery branches off and anastomoses with each other; and in the latter half of the embryonal stage main branches, presenting ring formation, radially send out small branches and at the periphery, anastomosing actively with one another, they form networks. Veins, forming networks of venous sinus and having large vascular space, present a picture like intra-tissue spaces. 3. The nutrient artery and vein at the arch of vertebra enter from incisura vertebrae caudalis or from the underside of the base of spinal process and, immediately branching out, they run in the direction of each process and to the anterior part of the arch of vertebra. 4. The cartilage canal of the body of vertebra plays an important role in growth of the nutrient artery and vein, but those that do not penetrate into the bone marrow, though they branch out and develop, end in blind terminal. These gradually deteriorate after the peak of growth reached around the eighth embryonal month. The cartilage canals at the arch of vertebra are slow in their growth and a few in number. 5. In comparing blood vessels in the bone marrow of thoracic vertebra with those of long bone, it seems that the arch of a vertebra corresponds to the body of bone in the latter, and the body and the process of a vertebra correspond to the epiphysis in the latter.
Published Date
1958-06-30
Publication Title
岡山医学会雑誌
Publication Title Alternative
Journal of Okayama Medical Association
Volume
volume70
Issue
issue6
Publisher
岡山医学会
Publisher Alternative
Okayama Medical Association
Start Page
2033
End Page
2044
ISSN
0030-1558
NCID
AN00032489
Content Type
Journal Article
Official Url
https://www.jstage.jst.go.jp/article/joma1947/70/6/70_6_2033/_article/-char/ja/
Related Url
http://www.okayama-u.ac.jp/user/oma/
language
日本語
Copyright Holders
岡山医学会
File Version
publisher
Refereed
True
Eprints Journal Name
joma