A Short Note On Types Of Blood Vessels

Blood vessels create a loop such as a closed circuit that initiates and ends at heart. Blood vessels and the heart form the circulatory system of the human body. The human body comprises approximately 60, 000 miles of blood vessels. Blood vessels comprise mainly three types: arteries, capillaries and veins. Blood vessels are located throughout the body and demonstrate shape and structure like a tube. Blood vessels are composed of three tissue layers including “Tunica intima”, “media” and “adventitia”. Capillaries are regarded as a type of blood vessel, which helps in dissolving waste materials from the body. Veins and arteries are also the type of blood vessels that are necessary for the human body for the smooth flow of blood.

Overview of blood vessels

Blood is mentioned as the channel that helps in carrying blood throughout the human body, which forms the complete circulatory system. There are three types of blood vessels, which include arteries, veins and capillaries. The major objective of blood vessels is to deliver blood to the tissues and organs in the body. The body supplies that blood with the nutrients and oxygen they are required to function. Blood vessels help in carrying carbon dioxide and waste material away from the tissues and organs. The main artery of blood vessels is in “aorta” which helps in connecting to the left side of the heart. The major vein in the body is the vein cava, which is located at the upper right position of the chest. 

Blood vessels are demonstrated as a tube-like structure and shape which continues in a straight line. Among different types of blood vessels, the aorta is the largest one whose size is approximately 2 centimetres. A broad range of problems impacts blood vessels including “Arterial disease”, “Aneurysm”, “blood clots”, “varicose veins” and vascular malformations. Symptoms of blood vessels broadly vary across distinct blood vessel disorders types, which might not cause any type of symptoms until the development of serious problems.

Role of capillaries

Capillaries are regarded as tiny blood vessels, which have thin walls on them. Nutrients and oxygen from blood can shift through walls and get into tissues and organs. Capillaries play a remarkable role in taking waste material from the tissues where CO2 and nutrients are exchanged for waste. It is regarded as the smallest blood vessel in the human body, which helps to connect the arteries to the veins. These blood vessels in the human body are mentioned as “microcirculation”. Capillaries are extremely thin in structure, which is around 5 micrometres in diameter, and are composed of two cell layers. It has been calculated that approximately 40 billion average capillaries are there in the human body. The two main functions of Capillaries include:

• The main objective of the Capillaries is to play a remarkable role in delivering and circulating oxygen in the “blood to the tissues” and picking up the CO2 to be removed.
• Another main function of Capillary is the materials exchange between tissue cells and blood. The distribution of capillaries varies with the metabolic activity of the body tissues.

Veins and arteries: difference

Arteries are regarded as powerful muscular blood vessels that help in transforming the “oxygen-rich blood” from the “heart to the human body”. Arteries handle the huge amount of pressure and force from the flow of blood but do not carry a huge blood amount. Around 10 to 15 percent of the blood of the human body is in the arteries at any particular point in time. On the other hand, veins are different from arteries and do not require carrying high pressurised blood but require carrying large deoxygenated blood volume back to the human heart. Veins are regarded as thin and less elastic walls that assist in bundling low pressure and high volume. Veins and arteries are different from each other as veins have valves that are close and open whereas arteries do not possess any characteristics.

Conclusion

It is comprehended that blood vessels are the most important part of the human body, which help in maintaining the proper flow of blood to all the parts of the human body. The flow of blood to different parts of the human body is demonstrated through arteries, capillaries and veins. Blood vessels are important to ensure that tissues and organs get the nutrients and oxygen that are required to work for the continuation of life.