Blood vessel between the blood and the tissues; and the veins, which carry blood from the capillaries back toward the heart. The word "vascular", meaning relating to the blood vessels, is derived from the Latin "vas", meaning vessel. A few structures (such as cartilage and the lens of the eye) do not contain blood vessels and are labeled. The arteries and veins have three layers. The middle layer is thicker in the arteries than it is in the veins: Capillaries consist of little more than a layer of endothelium and occasional connective tissue. When blood vessels connect to form a region of
Circulatory collapse form of circulatory collapse is circulatory insufficiency. A very large range of medical conditions can cause circulatory collapse. These include, but are not limited to: The effects of a circulatory collapse vary based on the type of collapse it is. Peripheral collapses usually involve abnormally low blood pressure and result in collapsed arteries and/or veins, leading to oxygen deprivation to tissues, organs, and limbs. Acute collapse can result from heart failure causing the primary vessels of the heart to collapse, perhaps combined with cardiac arrest. Circulatory collapse A circulatory collapse is defined as a general or specific failure of the