3rd December 2019

wikipedia
18

Are veins tissues?

Vein. Most veins carry deoxygenated blood from the tissues back to the heart; exceptions are the pulmonary and umbilical veins, both of which carry oxygenated blood to the heart. In contrast to veins, arteries carry blood away from the heart. Veins are less muscular than arteries and are often closer to the skin.

Moreover, are veins and arteries organs?

The cardiovascular system is made up of your fist sized heart, arteries, veins, and 5litres of blood. The heart is responsible for pumping the blood to all the organs in the body through arteries. At the receiving end, arteries get connected to smaller vessels called arterioles and capillaries inside the organs.

Are blood vessels tissues?

The largest blood vessels are arteries and veins, which have a thick, tough wall of connective tissue and and many layers of smooth muscle cells (Figure 22-22). The wall is lined by an exceedingly thin single sheet of endothelial cells, the endothelium, separated from the surrounding outer layers by a basal lamina.

What organs and tissues are in the circulatory system?

The circulatory system consists of three independent systems that work together: the heart (cardiovascular), lungs (pulmonary), and arteries, veins, coronary and portal vessels (systemic). The system is responsible for the flow of blood, nutrients, oxygen and other gases, and as well as hormones to and from cells.
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