Circulatory System


The circulatory system performs many vital functions. It plays an important role in respiration. The circulatory system is also important in nutrition, in the removal of wastes and poisons, and in several other body processes. The functions of the blood is to keep your body running so that you can do daily activities but you always have to take care of your body. If you don't take care of your body it can result in very bad problems. The circulatory system performs many vital functions. It has important part in respiration. The circulatory system helps people from get disease. White blood cells destroys bacteria, viruses and other harmful stuff. As the blood circulates it keeps the body temperature stable by absorbing heat from the cell's production of energy. If temperature rises the flow of blood into vessels in the skin increases. If the temperature drops the flow of blood to the skin is restricted.

Major Organs

The heart is a muscular organ, responsible for pumping blood through the blood vessels. The heart is the size of a clenched fist. The heart is a musce it contracts and relaxes. Your heart beats about 70 times a minute, but if you are exercising it beats even faster. With the blood it pumps it throughout the body. In the average lifetime your heart beats half a billion times. The heart is the most crucial organ in your body. Some other major organs are the lungs so they don't collapse because they will without blood flow and oxygen flow. In the circulatory system there are three major groups the heart, the blood, and the blood vessels.

Heart structure

In the heart there is one atrium and one ventricle for each circulation. There are a total of four chambers the left atrium, left ventricle, right atrium, and a right ventricle. The heart is composed of cardiac muscle, and inside voluntary tissue which is found. Your heart is about the size of your clenched fist. It contracts and relaxes 70 times a minute or more if you are exercising and pumps blood through its chambers to the body. It does this through a collection of blood vessels. the heart is the size of a clenched fist. The heart is in the thorax between two lungs with its apex tilted slightly. After the heart produces the blood it pumps it into the arteries that are all around it. After the blood is made from the heart then after it is passed to the blood vessels and travels through the whole body and then back to the back.


All blood enters the right side of the heart through two veins, then muscle superior vena cava and the inferior vena cava. Blood picks up oxygen from the lungs, and then oxygen leaves the lungs. Your blood travels through a rubbery pipeline with man branches, both big and very small. Your heart gets oxygen when you inhale, you breathe in air and it goes down to your lungs. Blood is pumped from your heart to your longs. In the human body 5 liters of blood travels through your body everyday. The blood travels through the heart, lungs, and all your blood vessels. The heart is the organ that pushes the blood through the body and back. There are two parts in the human body the liquid plasma, and just cells. The blood in our bodies are blue but when our blood hits oxygen it automatically turns red. If you don't take care of your body you can get high blood pressure and this problem can make you dizzy, and even death. The blood flow is know as blood circulation. The blood is pump by the heart a portion of blood takes 30 seconds to complete one course of circulation around the body. Most of your blood is colorless liquid called plasma. Red blood cells make the blood look red and give oxygen to the cells in the body, and carry back the waste gases in exchange.

How it works

The circulatory system is made up of the vessels and the muscles that help and control the flow of the blood around the body. This process is called circulation. The circulatory system delivers nutrients to and from different cell. The main parts of the system are the heart, arteries, capillaries and veins. As blood begins to circulate, it leaves the heart from the left ventricle and goes into the aorta. The aorta is the largest artery in the body. The blood leaving the aorta is full of oxygen. This is important for the cells in the brain and the body to do their work. The oxygen rich blood travels throughout the body in its system of arteries into the smallest arterioles. On its way back to the heart, the blood travels through a system of veins. As it reaches the lungs, the carbon dioxide is removed from the blood and replace with fresh oxygen that we have inhaled through the lungs. When the blood is first made it is pumped by the heart in to the arteries, and it is carried in the veins. The blood makes a big circle through the body from the heart to the head to the feet to the lungs then back to the heart. The circulatory system is a complex arrangement of tubes that transport blood as well as waste products throughout the entire body. the heart is the main pump. there are four four chambers in the heart the right atrium receives the blood first. The right atrium forces the blood into the right ventricle. when it receives the blood blood is pump into both lungs. This part of the circulatory system is sometimes referred to as pulmonar.

How it works with other systems (at least 3 different systems)

The first organ it works with is the heart. The heart has the biggest role play in the circulatory system because is makes the blood and it is the one that pumps it through the whole body. The heart is what keeps the blood flow going and keeping us alive and letting us do our daily activities. The second major part is the lungs. The lungs because blood has to flow through the lungs to keep the lungs working and to help us breath. It helps keep our lungs doing its work so that they don't collapse. Then the third system that the blood is a big part of is the brain. The brain because when the blood flows through the brain everyday it helps us think, move, feel, and a lot more. These are the main 2 systems the heart, lungs, and the brain because those helps us stay alive and keep us doing daily activities. The circulatory system works with the muscular system, the nervous system, and the digestive system. The heart is a muscle so it is part of the muscular system. Also the heart and lungs have nerves so it is also part of the nervous system. It is part of the digestive system because the circulatory system helps carry waste to the rectum during the digestive system.

Disorders of the circulatory system

The circulatory system can be damaged by disease or injury. Disorders of the circulatory system generally result in diminished flow of blood and diminished oxygen exchange to the tissues. One of the most common diseases of the system is arteriosclerosis, which results from the growth of fatty deposits in the arteries. Another disease, hypertension, commonly called high blood pressure, is often associated with arteriosclerosis. Hypertension makes the heart work harder and may lead to such complications as a heart attack, a stroke, or kidney failure. The major problem is heart attack or a stroke. It is becasuse it is caused by not enough blood is being givin throught your whole body at all times. This can damage blood clots and blood vessels. You can get surgery to help or fix the problem or you can take various medicine and or just rest until the problem is better or completely cured.


-The adult body has over 60,000miles of blood vessels!
-The adult heart pumps over 4,000 gallons of blood a day
-Your heart beats 30 million times a year
-It takes 30 seconds for your blood to go threw the whole body
-On its way to the heart, the blood travels through veins.
-You can wrap your blood vessels aroung the equator twice
-By the end of your life your heart bump about 3 billion times
-About 2 million blood cells die in the human body every second, and the same number are born each second.
-It takes about one minute for a red blood cell to circle the whole body.
-The heart beats around 3 billion times in the average person's life.
-It takes about 20 seconds for a red blood cell to circle the whole body.
-Blood that is rich on Oxygen looks red. Blood that is poor on Oxygen looks blue.