Assertion: vein | /r/MadeOf | valve
Facets:
value: at regular intervals
type: TEMPORAL
value: unlike arteries
type: OTHER
value: in the tunica intima
type: LOCATION
value: significantly
type: DEGREE
Source sentences:
text: In addition, many veins of the body, particularly those of the limbs, contain valves that assist the unidirectional flow of blood toward the heart.
text: In addition, many veins, particularly in the lower limbs, contain valves formed by sections of thickened endothelium that are reinforced with connective tissue, extending into the lumen.
text: Moreover, both lymphatic vessels and veins contain valves to prevent the backflow of fluids.
text: Significantly, both lymphatic vessels and veins contain valves.
text: Unlike arteries, veins contain valves that ensure blood flows in only one direction.
text: For example, a capillary is microscopically thin to allow gases to exchange, the arteries are tough and flexible to cope with high pressure blood flow and the veins contain valves to prevent the blood from travelling backwards when at low pressure.
text: Veins contain valves that primarily prevent the back-flow of blood.
text: They may contain valves which stop blood flowing away from the heart.
text: Arteries contain significantly more smooth muscle than veins (especially in the tunica media) whereas veins contain valves in the tunica intima.
text: In addition, many veins of the body, particularly those of the limbs, contain valves that assist the unidirectional flow of blood toward the heart.
text: In addition, many veins, particularly in the lower limbs, contain valves formed by sections of thickened endothelium that are reinforced with connective tissue, extending into the lumen.
text: Veins also contain valves at regular intervals - these close as the blood flows past to prevent blood flowing backwards.
text: many veins contain valves to prevent back flow.