T. Clark Brelje, Ph.D.
University of Minnesota
Department of Genetics, Cell Biology and Development
6-160 Jackson Hall
321 Church St SE
Minneapolis, MN 55455
Robert L. Sorenson, Ph.D.
University of Minnesota
Department of Genetics, Cell Biology and Development
6-160 Jackson Hall
321 Church St SE
Minneapolis, MN 55455
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Click the thumbnail to show this specimen stained with hematoxylin & eosin.
Arterioles and venules are small diameter blood vessels that allow blood flow to and from capillary beds, respectively.
Compare H&E staining to that with Verhoeff.
Arteriole - small diameter blood vessel that branches out from arteries and leads to capillaries.
Their wall is composed of an endothelial cell and only one or two layers of smooth muscle. An inner elastic lamina is usually absent from smaller arterioles. The thickness of wall is usually similar in size to the diameter of the lumen.
Arteriole #1 - has one to two layers of smooth muscle and a remnant of an inner elastic lamina.
Small Arteriole #4 - the nuclei of two endothelial cells and two smooth muscle cells are seen.
Arterioles are the primary site of vascular resistance.
Venules - small diameter blood vessel that allows blood to return from capillary beds to veins
Their wall is composed of an endothelial cell, one or two layers of smooth muscle, and very thin adventitia.
Examples of arterioles and venules #1, #2, and #3.
Arteriole & Venule (Verhoeff Stain)
Click the thumbnail to show this specimen stained with Verhoeff stain.
Arterioles and venules are small diameter blood vessels that allow blood flow to and from capillary beds, respectively.
Compare Verhoeff staining to that with H&E.
Arteriole - small diameter blood vessel that branches out from arteries and leads to capillaries.
Their wall is composed of an endothelial cell and only one or two layers of smooth muscle. An inner elastic lamina is usually absent from smaller arterioles. The thickness of wall is usually similar in size to the diameter of the lumen.
Arteriole #1 - has one to two layers of smooth muscle and a remnant of an inner elastic lamina.
Arterioles #2 - has one to two layers of smooth muscle and a remnant of an inner elastic lamina.
