Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1976-9-25
pubmed:abstractText
The microvascular bed of the rat mesocecum has been examined in vivo using differential interference (Nomarski) optics and subsequently by electron microscopy. The preferential channel, from terminal arteriole to collecting venule, has been examined. In the terminal arteriolar segment the endothelial layer is covered by a continuous layer of smooth muscle cells which, in turn, are surrounded by adventitia. In the metarteriolar segment the periendothelial cells still resemble smooth muscle cells but the tunica media is discontinuous. In the distal segment periendothelial cells are more scattered and have the appearance of pericytes. There appears to be a continuous transition of the periendothelial cell layer from terminal arteriole to distal segment. Nerve endings were seeen in both the terminal arteriolar and metarteriolar segments. During contraction smooth muscle cells, oriented circumferentially, shorten and thicken. Endothelial cells appear anchored by myoendothelial junctions. Endothelial cells have filaments which show increased banding during vasoconstriction, suggesting that such cells may contract. Capillary offshoots leave the preferential channel, usually at right angles. Smooth muscle cells are oriented to form a sphincter and there are many myoendothelial junctions at the branch point. Within a short distance the capillary branch loses its periendothelial coat.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
0002-9106
pubmed:author
pubmed:issnType
Print
pubmed:volume
146
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
385-425
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1976
pubmed:articleTitle
Observations of the microcirculatory bed in rat mesocecum using differential interference constrast microscopy in vivo and electron microscopy.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.