Vascularization of tree shrew' olfactory bulb as revealed by plastic corrosion cast technique ad viewed under SEM
Issued Date
1989
Copyright Date
1989
Resource Type
Language
eng
File Type
application/pdf
No. of Pages/File Size
xvi, 191 leaves : ill.
Access Rights
open access
Rights
ผลงานนี้เป็นลิขสิทธิ์ของมหาวิทยาลัยมหิดล ขอสงวนไว้สำหรับเพื่อการศึกษาเท่านั้น ต้องอ้างอิงแหล่งที่มา ห้ามดัดแปลงเนื้อหา และห้ามนำไปใช้เพื่อการค้า
Rights Holder(s)
Mahidol University
Bibliographic Citation
Thesis (M.Sc. (Anatomy))--Mahidol University, 1989
Suggested Citation
Ritonga, Muchtar, 1936- Vascularization of tree shrew' olfactory bulb as revealed by plastic corrosion cast technique ad viewed under SEM. Thesis (M.Sc. (Anatomy))--Mahidol University, 1989. Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/103390
Title
Vascularization of tree shrew' olfactory bulb as revealed by plastic corrosion cast technique ad viewed under SEM
Author(s)
Advisor(s)
Abstract
Vascularization of the Tree Shrews olfactory bulb (OB) was studied by application of Batsons no 17 plastic compound corrosion cast technique and viewed under SEM, with complementary usage of color latex and color vinyl casting methods. Batsons no 17 compound media injection was particularly excellent for the study of detailed features of the vasculature and the microvasculature under SEM; however supplementation of color latex for the study of gross arterial system in relation to venous system, and of color vinyl for the study of gross artierial system separately from the study of venous system has proved considerable contribution. The Tree Shrews OB was found, to be supplied by two of the three terminal branches of the anterior cerebral artery (ACA), namely the medial and the lateral olfactory arteries, and to be drained by the medial olfactory, the lateral olfactory, and the olfactory collar veins; subsequent drainage was mainly by way of the dominant dorsal trend leading through the external jugular vein, which was much larger than the internal jugular vein. The internal ethmoidal artery was the other terminal branch of the ACA, which before proceeding to the nasal cavity formed arcade-like or basket-like olfactory ethmoidal plexus around the capsule of the OB, together with branches of the external ethmoidal artery. The latter one arose from the external ophthalmic artery, a branch of the stapedial artery. The vascular, particularly the capillary dimensions, in the Tree Shrew were found to be much smaller than that in human. The Tree Shrews OB demonstrated vascular lamination which seemed to correspond to the cytoarchitectural lamination of this organ. This lamination was supported by elaboration of appropriate vascular branching system of V,Y,T and L types, and reinforced by sphincter system, particularly by the precapillary sphincter. The microvasculature of the Tree Shrews OB represented nonfenestrated and end-capillary types. Features of vasa vasorum and venous valves were not found. The accessory olfactory bulb (AOB) was supplied by the dorsal branches of both the medial and the lateral olfactory arteries, and was drained by correspondingly accompanying veins. Its patterns of microvasculature were similar to those of the OB, but with parallel capillary arrangement at its rostral region. From the result of this study, the taxonomic position of the Tree Shrew in a separate or special order i.e. the Order Tupaioidea was conclusively supported.
Description
Anatomy (Mahidol University 1989)
Degree Name
Master of Science
Degree Level
Master's degree
Degree Department
Faculty of Science
Degree Discipline
Anatomy
Degree Grantor(s)
Mahidol University