ARTERIES
The walls of arteries contain flat and smooth muscle fibre that deal and relax under the guidelines of the sympathetic nervous system. The functions of the arteries are: transport blood away from the heart and transport oxygenated blood only. Arteries have four different parts, which are lumen, endothelium, smooth muscle and connective tissue.
In arteries, the function of the lumen is to fires blood into the arteries at a high pressure, and they are very thick. The endothelium is made up of endothelial lining cells and gives the smooth surface to the lumen, also known as the tunica interna. Smooth muscle is a layer of the arteries that can cope with the stretching the pulses of the blood and contracts and helps to keep the blood moving along. Finally, connective tissue consists mainly of tough collagen fibres, which …show more content…
Lumen is very thin and only one red blood cell can pass through the lumen at a time, which slows the blood flow so substances can diffuse in and out. Finally, the endothelium is the thin flattened cell that lines the inner wall of all blood vessels. (Boundless)
The differences between the Arteries, Vein, and Capillaries
Vein consists of three covers: a cover of tissue on the outside, a cover of smooth epithelial cells on the inside and a cover of muscle in between. Veins transfers’ blood to the heart and lungs at low pressure afterward getting it from the capillaries. The valves are found inside the veins and make keep blood moving in one direction.
Capillaries attach veins and arteries to swap oxygen and carbon dioxide. It is slim and wobbly. The capillaries are just as fat as one epithelial cell. Blood passes over capillaries one cell at a time, single file. The blood cells discharge oxygen, which passes through the capillary walls into near tissue. Tissue then discharges carbon dioxide over the capillary walls into the red blood cells. (Inner
The walls of arteries contain flat and smooth muscle fibre that deal and relax under the guidelines of the sympathetic nervous system. The functions of the arteries are: transport blood away from the heart and transport oxygenated blood only. Arteries have four different parts, which are lumen, endothelium, smooth muscle and connective tissue.
In arteries, the function of the lumen is to fires blood into the arteries at a high pressure, and they are very thick. The endothelium is made up of endothelial lining cells and gives the smooth surface to the lumen, also known as the tunica interna. Smooth muscle is a layer of the arteries that can cope with the stretching the pulses of the blood and contracts and helps to keep the blood moving along. Finally, connective tissue consists mainly of tough collagen fibres, which …show more content…
Lumen is very thin and only one red blood cell can pass through the lumen at a time, which slows the blood flow so substances can diffuse in and out. Finally, the endothelium is the thin flattened cell that lines the inner wall of all blood vessels. (Boundless)
The differences between the Arteries, Vein, and Capillaries
Vein consists of three covers: a cover of tissue on the outside, a cover of smooth epithelial cells on the inside and a cover of muscle in between. Veins transfers’ blood to the heart and lungs at low pressure afterward getting it from the capillaries. The valves are found inside the veins and make keep blood moving in one direction.
Capillaries attach veins and arteries to swap oxygen and carbon dioxide. It is slim and wobbly. The capillaries are just as fat as one epithelial cell. Blood passes over capillaries one cell at a time, single file. The blood cells discharge oxygen, which passes through the capillary walls into near tissue. Tissue then discharges carbon dioxide over the capillary walls into the red blood cells. (Inner