Because they are lowpressure vessels, larger veins are commonly equipped with valves that promote the unidirectional flow of blood toward the heart and prevent backflow toward the capillaries caused by the inherent low blood pressure in veins as well as the pull of gravity Table 2 compares the features of arteries and veins Figure 666 Blood vessels form a tubular network throughout the body that allows blood to flow from the heart to every body cell and then back to the heartThe three types of blood vessels are arteries, capillaries, and veinsEach blood vessel consists of a layered wall surrounding a central bloodcontaining space, or lumenThis is the general structures of veins, arteries, and capillaries Try to think about what function some structures may have and why they are found in any of the 3 blood vessels displayed here Please note the floating dots are meant to represent the entire structures (ie vein, capillary, or artery)
Blood Vessel Structure And Function Artery Vein And Capillary Youtube
