Peter Pettigrew, the man who betrayed Harry's family for the sake of the Dark Lord's favor, found his master once more in the forests of Albania. his face was as pale as the snow glistening on his shoulders." The implication that Voldemort's evil was strong enough to erode his good looks is startling enough - worse still is the fact that Voldemort had grown so powerful that he no longer felt the need to maintain his handsomeness as a tool. pushed the boundaries of magic further, perhaps, than they have ever been pushed." This had begun to wear away at his looks: Harry noted from his viewpoint in the Pensieve that Riddle looked "as though his features had been burned and blurred they were waxy and oddly distorted, and the whites of his eyes now had a permanently bloody look. As he argued, by that time he had "experimented. Ten years after Hepzibah Smith's murder, Riddle (who was still using his birth name in polite society) emerged to ask Dumbledore, already Headmaster of Hogwarts, for the position of Defense Against the Dark Arts professor. heart_vascular_institute/conditions_treatments/conditions/venous.Most suggestive of the extremes to which he went is the manner in which his appearance changed. diseases-and-conditions/superficial-thrombophlebitis opentextbc.ca/anatomyandphysiology/chapter/20-1-structure-and-function-of-blood-vessels/ Chapter 20.1: Structure and function of blood vessels. home/heart-and-blood-vessel-disorders/venous-disorders/overview-of-the-venous-system nhs.uk/conditions/deep-vein-thrombosis-dvt
You can learn more about how we ensure our content is accurate and current by reading our editorial policy. Healthline has strict sourcing guidelines and relies on peer-reviewed studies, academic research institutions, and medical associations. Valves in these veins allow blood to flow from the superficial veins to your deep veins, but not the other way. Blood from superficial veins is often directed into the deep veins through short veins called connecting veins. However, without a nearby muscle for compression, they tend to move blood more slowly than deep veins do. The tunica intima of a superficial vein can also have a one-way valve. These are located in the fatty layer under your skin. Nearby muscles also compress the deep vein to keep blood moving forward. The tunica intima of a deep vein usually has a one-way valve to prevent blood from flowing backward. These are found in muscles or along bones. Systemic veins are further classified as being either: The systemic circuit carries deoxygenated blood from the rest of the body back to your heart, where it then enters the pulmonary circuit for oxygen. All other veins carry only deoxygenated blood. They’re unique because they carry oxygenated blood.
Once your lungs oxygenate the blood, the pulmonary circuit brings it back to your heart. The pulmonary circuit carries deoxygenated blood from your heart to your lungs. Veins are based on the circuit they’re found in: Your body circulates blood on two different tracks called the systemic circuit and the pulmonary circuit. Veins are often categorized based on their location and any unique features or functions.
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