Venule
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WikiDoc Resources for Venule | |
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Evidence Based Medicine | |
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Clinical Trials | |
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Ongoing Trials on Venule at Clinical Trials.gov Clinical Trials on Venule at Google
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US National Guidelines Clearinghouse on Venule
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Directions to Hospitals Treating Venule Risk calculators and risk factors for Venule
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Phone:617-525-6884
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Overview
A venule is a small blood vessel that allows deoxygenated blood to return from the capillary beds to the larger blood vessels called veins.
Structure
Venule walls have three layers: An inner endothelium composed of squamous endothelial cells that act as a membrane, a middle layer of muscle and elastic tissue and an outer layer of fibrous connective tissue. The middle layer is poorly developed so that venules have thinner walls than arterioles. These vessels are pink sometimes due to the high content of nitrogen.
External links
Cardiovascular system | |
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| Systemic circulation | Heart → Aorta → Arteries → Arterioles → Capillaries → Venules → Veins → Vena cava → Heart |
| Pulmonary circulation | Heart → Pulmonary arteries → Lungs → Pulmonary vein → Heart |
Acknowledgement and Attribution Regarding Sources of Content
Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .
