Blood Vessels Research Paper

William Li mentions the blood vessels in his talk. Human’s body is literally packed with them. The smallest blood vessels are called capillaries, it is the vessels of life and are feeding cancer cells, bringing oxygen and nutrients. Also, it can be the vessels of death. We have got nineteen million of them in our bodies. Blood vessels are adapt our bodies no matter where they grow in our bodies.

Veins are made up of more elastic tissue and less smooth muscle and carry blood to the heart from the body. The heart wall has three layers that surround the heart. The outer most layer is the epicardium, middle layer is the myocardium, inner layer is the endocardium.

36. The outermost wall of large arteries and veins contains a special vascular structure called what? Tunica externa*

Blood vessels are hollow (this hollow space is called the lumen) so as to allow the blood to pass through. They are also lined with endothelium, which prevents the clotting of the blood that passes through.

12. What are the three mechanisms for hemostasis? What is the sequence of events for formation of a blood clot? Know the common final pathway used by both the extrinsic and intrinsic clotting pathways, and know what activates each clotting pathway.

a circulatory system which facilitates the exchange of materials for all but the simplest animals

A. Compare and contrast afferent and efferent lymphatic vessels. Describe in one way in which they are similar and one way they are different.

The heart, blood and blood vessels make up the basis of the cardiovascular system also known as the circulatory system. The average human body contains approximately 5 litres of blood which is carried around the body via a network of blood vessels split into three types; arteries, veins and capillaries. The arteries are the largest of the three vessels and carry blood away from the heart. Veins carry blood to the heart and are smaller than arteries, then finally the smallest vessels known as capillaries distribute the oxygen rich blood to organs whilst simultaneously picking up the waste carbon dioxide and water from the organs to transport back to the heart where it can be pumped into the lungs to be exhaled.

The act of breathing alters the pressure within the thoracic cavity and as the pressure drops, this also helps to force the lymph through the network of lymph vessels which have smooth muscle to aid the circulation. The structure of the lymph vessels are very similar to those of the circulatory system vessels. A protective outer layer, a muscular central core and a smooth inner lining to aid the free flow of lymph.

Which blood vessel shown in the figure carries oxygenated blood to the lower thoracic cavity and the abdominal cavity of the body?

Burst blood vessels can appear in two different forms. One is a purplish mark that looks like a bruise. The other one appears as a red spreading of cells. These popped blood vessel can appear anywhere on the body. Spider veins or thread veins are other names for them. They usually tend to heal on their own, but sometimes there can be things that make the process go a little faster.

Did you know the circulatory system comprises the heart, veins, capillaries and arteries? The system moves pure oxygenated blood in a continuous and controlled way from the lungs and heart so that blood can reaches every cell. Blood travels through a type of network of vessels that include capillaries that permeate every tissue of the body. Once it’s depleted of oxygen, the blood returns to the lungs and heart and the cycle continues.

veins to the tissues of the body. These walls do not let out blood but

The endothelial cells of the BBB are surrounded by a phospholipid bilayer that is only permeable to very small and/or lipid soluble molecules. Lipid soluble

there is no pumping mechanism to do so); veins have to be able to hold