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Arteriolar constriction and dilation can be significant
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- Yellow…adipocytes
- Blue-media
- Red-intima
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longitudinal section of arteriole. Red circled region is a gland
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- TEM
- Arteriole: note single layer of smooth muscle cells, subendothelial CT, and endothelium
- Red arrow-nucleus of smooth muscle cells
- Blue arrow-dense bodies
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- A-arterioles
- B-venules
- Small blood vessels from the microvasculature (arterioles
- and venules), surrounded by components of connective tissue
- arrowheads depict fibroblasts.
- H&E stain, Low magnification.
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- A-arteriole
- B-venule
- Venules have larger lumen than arterioles
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- A-normal coronary artery
- B-complicated lesion. Blue-ish area is calcium buildup
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