Definition of "microvasculature" []

• The portion of the circulatory system composed of the smallest vessels, such as the capillaries, arterioles, and venules. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "When applied to the skin, glutathione, via the phospholipid carrier, is able to penetrate various levels, reaching into the deep dermis and finally into the subdermal microvasculature, or the small blood vessels under the skin."
• "Activated brain areas utilize more oxygen, which transiently decreases the levels of oxyhemoglobin and increases the levels of deoxyhemoglobin, and within seconds the brain microvasculature responds to the local change by increasing the flow of oxygen-rich blood into the active area."
• "I should find fibrinoid changes in the renal microvasculature or early nephrosclerosis."