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Blood vessels function to transport blood to an animal's body tissues. In general, arteries and arterioles transport oxygenated blood from the lungs to the body and its organs, and veins and venules transport deoxygenated blood from the body to the lungs. Blood vessels also circulate blood throughout the circulatory system.
Two episodes from the Passion-cycle murals of Öja Church, Gotland. The iconic significance of the Chalice grew during the Early Middle Ages. Depictions of Jesus praying in the Garden of Gethsemane, such as that in the fourteenth-century frescoes of the church at Öja, Gotland (illustration, right), show a prefigured apparition of the Holy Chalice that stands at the top of the mountain ...
Akeldama (Aramaic: חקל דמא or 𐡇𐡒𐡋 𐡃𐡌𐡀 Ḥaqel D'ma, "field of blood"; Hebrew: חקל דמא; Arabic: حقل الدم, Ḥaqel Ad-dam) is the Aramaic name for a place in Jerusalem associated with Judas Iscariot, one of the original twelve apostles of Jesus.
In vertebrates, the circulatory system is a system of organs that includes the heart, blood vessels, and blood which is circulated throughout the body. [1] [2] It includes the cardiovascular system, or vascular system, that consists of the heart and blood vessels (from Greek kardia meaning heart, and Latin vascula meaning vessels).
Endothelium lines the inner wall of vessels, shown here. Microscopic view showing endothelium (at top) inside the heart. The endothelium forms an interface between circulating blood or lymph in the lumen and the rest of the vessel wall. This forms a barrier between vessels and tissues and control the flow of substances and fluid into and out of ...
How many of these did you know? Tell us in the comments below! The canthus is where the upper and lower eyelids meet. The rasceta are the lines on the inside of your wrist. The purlicue is the ...
In the largest vessels, the vasa vasorum penetrates the outer (tunica adventitia) layer and middle (tunica media) layer almost to the inner (tunica intima) layer. In smaller vessels it penetrates only the outer layer. In the smallest vessels, the vessels' own circulation nourishes the walls directly and they have no vasa vasorum at all.
Most vessels of the microcirculation are lined by flattened cells of the endothelium and many of them are surrounded by contractile cells called pericytes.The endothelium provides a smooth surface for the flow of blood and regulates the movement of water and dissolved materials in the interstitial plasma between the blood and the tissues.