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blood capillaries |
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blood capillaries
Etymology: AS, blod + L, capillaris, hairlike the tiny vessels that convey blood between the arterioles and the venules and allow for internal respiration and nourishment of tissues. The capillary wall generally has a thickness of one cell, permitting easy diffusion of gas molecules; occasional tiny openings permit diapedesis of leukocytes, distribution of nutrients to the tissues supplied by the capillary network, and collection of waste products released by the cells. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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