The circulatory system essay

Even at rest, the average human heart easily pumps over five liters of blood throughout the human body every minute. Blood vessels contract after an injury to reduce bleeding and also to conserve body heat. If the muscle is located in the wall of a hollow organ, its contractions may cause the contents of the organ to move.

Its structure is rather complicated, as it is made up of a number of liquids and solids mixed with small portions of oxygen and carbon dioxide. The separation of left and right sides of the heart is necessary to prevent the mixing of the oxygenated blood on the left side with the deoxygenated blood on the right side.

The blood having no oxygen in it is called deoxygenated blood. Hemoglobin are small molecules found within red blood cells that give the blood its rich red color. It is divided into four chambers, the right atrium, the right ventricle, the left atrium, and the The circulatory system essay ventricle.

An aortic aneurysm occurs when a section of the aorta bulges, stretches, and swells.

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In the lymph nodes the lymphocytes, a kind of white blood cell, infection. When the right atrium contracts, deoxygenated blood is pushed into the right ventricle through the valve V2. Arteries, veins and capillaries are called blood vessels. Similarly, the right atrium is connected to the right ventricle through another valve V2.

This whole process is repeated continuously. The heart is roughly triangular in shape. Blood is the fluid that transports the disease-fighting white blood cells, the oxygen-supplying red blood cells, and the fuel-replenishing electrolytes to the bodys various tissues.

Tissues in the cardiovascular system encompass arteries, the heart, pericardium, and veins. Blood vessels expand during exercise to meet the increased demand for blood and to cool the body.

Please note that the two atria left atrium and right atrium contract together and relax together. This oxygenated blood is again sent to the left atrium of heart by pulmonary vein for circulation in the body.

When the left atrium contracts, the oxygenated blood is pushed into the left ventricle through the valve V1. The left side of heart left atrium and left ventricle acts as one pumps which pumps blood into the whole body, except the lungs. The circulatory system increases the flow of blood to meet increased energy demands during exercise and regulates body temperature.

Several functions of the cardiovascular system can control blood pressure. The heart beat is due to the rhythmic contraction and relaxation of the heart muscles which make up the atria and the ventricles. This reduces the production of energy.

Circulatory system

At the same time, the waste substances like carbon dioxide formed in the cells enter into capillaries. Autonomic nerve signals from the brain along with certain hormones affect the rate and strength of heart contractions. The cardiovascular system works closely with other systems in our bodies.

The Circulatory System

Oxygen is essential In that it provides some of the energy required during cell metabolism. Since ventricles have to pump blood into various organs with high pressure, they have thicker walls than atria.

Deposits in the artery cause the vessel to stiffen and narrow. This energy is useful in warm-blooded animals like mammals and birds which have high energy needs because they constantly require energy to maintain their body temperature. In a four-chambered heart, the left side and right side of the heart are completely separated to prevent the oxygenated blood from mixing with deoxygenated blood Such a separation allows a highly efficient supply of oxygen to the body cells which is necessary for producing a lot of energy.The circulatory system works carefully with other systems in animal organisms.

Short essay on Human Circulatory System

It delivers oxygen and nutrients to organisms by working with the respiratory system. The circulatory system assists carrying waste and carbon dioxide out of the organism. The organ system of human beings (and other animals) which is responsible for the transport of materials inside the body is called circulatory system.

The various organs of the circulatory system in humans are: Heart, Arteries, Veins and Capillaries. The Cardiovascular System Essay Words | 4 Pages. One of the most important systems in the body, keeping it alive, is the cardiovascular system. As a part of the circulatory system, the cardiovascular system pumps blood throughout the body through a network of many arteries and veins, providing it with nutrients and oxygen.

Circulatory System Essay the circulatory system The circulatory system is an organ system; the main purpose of the circulatory system is to deliver nutrients such as amino acids and electrolytes.

Move gases, hormones, blood cells, etc to and from cells in the body to fight diseases.

The Circulatory System

Lastly it. The circulatory system is, therefore, normally divided into three key constituents: the Heart, the Blood and the Blood Vessels.

The heart is a most important muscle in the human body. It is located in the middle of one’s chest somewhat to the left.

The human circulatory is one of, if not the, most important systems in the body. It consist of such organs as the heart and lungs. However every organ and organ system in the body is nourished and kept alive through the use of the circulatory system.

The main organ in the circulatory system is the /5(2).

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The circulatory system essay
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