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The Vasomotor Response of the Human Umbilical Cord Vessels to Changes in its External Thermal Environment *
Author(s) -
Sinnathuray T. A.
Publication year - 1968
Publication title -
australian and new zealand journal of obstetrics and gynaecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.734
H-Index - 65
eISSN - 1479-828X
pISSN - 0004-8666
DOI - 10.1111/j.1479-828x.1968.tb00703.x
Subject(s) - umbilical cord , umbilical vein , vasoconstriction , vasomotor , vasodilation , umbilical artery , anatomy , medicine , perfusion , cardiology , anesthesia , chemistry , biology , fetus , pregnancy , biochemistry , genetics , in vitro
Summary Perfusion studies conducted on fresh isolated segments of the human umbilical cord show that the umbilical vessels display a remarkable intrinsic property of vasomotor response to changes in external thermal environment. The umbilical artery is much more responsive than the umbilical vein; both vessels consistently exhibit vasoconstriction on cooling and vasodilatation on re‐warming.