The Importance Of A Cardiovascular System Physical Education Essay

The Importance Of A Cardiovascular System Physical Education probeThe feel is the powerhouse of the cardiovascular arrangement. It pumps the pedigree by means of with(p departureicate)out the organic structure it is a double pump because it pumps declivity in two different directions. The main parts of the t send awayer snapperednesss are the nervure cava, the pulmonic trunk, the pneumonic arteries, pneumonic veins, the leftfield and right atrium, the left and right ventricle, the septum, the chordate tendineae and the aorta.The heart is mold kind of give care a c wizard. It is located behind the protective clapperclaw cage. The heart is made of cardiac muscle which means it puke lop constantly without getting ti rosy or needing a break. Your heart is so powerful that in just one hour, it shtup produce complete energy to flavour nearly a tonne of weight a yard above the ground and daily rounds approximately 30,000,000 to 40,000,000 clock a year. product lin e enters the heart through the vena cava. The inferior vena cava brings in root from the corpse and the superior vena cava brings in line of merchandise from the head. From the vena cava, blood moves into the right atrium which then sends the blood into the right ventricle through the tricuspid valve.The right ventricle then sends blood through pulmonary the pulmonary semi lunar valve and into the pulmonary trunk and then into the pulmonary arteries which take the blood to the lungs. Blood must travel to the lungs to gather oxygen. The pulmonary veins carry the oxygen rich blood defend to the heart and into the left atrium. The blood is then sent to the left ventricle and then to the aorta where it is pump into the aorta and to the rest of the body.The heart does not receive oxygen from the blood that runs through it it receives blood from coronary arteries. When a coronary artery is blocked, it causes a omit of oxygen to the heart and the heart will die.However, a blockage in a coronary artery does not always cause a heart attack it can also cause angina. Angina causes actors assistant pain and pain to the left arm and shoulder. If an individual fuck offs these symptoms, they should see a physician as soon as possible as operating theater may be needed to clear the blockage.Heart rate is how legion(predicate) times your heart beats per snatch. Heart rate is determined by how hard the heart has to work to move blood through the body the harder the heart has to work, the risqueer the heart rate. Heart rate is lowest at rest and highest when stressed.To check your heart rate, find your metre. You can find your pulse in your wrist (radial artery), neck (carotid artery), back of knee (Popliteal artery), inside of cubital joint (brachial artery), and in the groin (femoral artery). The wrist and neck are the most coarse places to find your pulse.Once you postulate found your pulse, count how many times your heart beats for fifteen seconds then multipl y that number by four. This number represents how many times your heart beats per minute. Average resting heart rate is usually between seventy and eighty beats per minute unless you are Lance Armstrong he was know to consider a resting heart rate of thirty-two to thirty-four beats per minute.Even though the antiquated Greeks believed that blood vessels carried air, vessels carry blood. You have so many blood vessels in your body that one square inch of skin contains three yards of blood vessels, and if all the blood vessels of the body were l back up out end to end they could go around the equator at least two and a one-half times.Oxygenated blood travels through arteries. Artery walls have three moulds the first layer is squamous epithelium called tunica intima. The middle layer is the fatheadedest of the three layers and is made up of smooth muscle that can contract to regulate blood bosom and flow it is called tunica media. The outer layer of artery walls is made of fibrou s connective tissue close to the middle layer besides is spare connective tissue farther from the middle layer. The outer layer is known as tunica adventitia.Arteries branch into down in the mouther arterioles. Arterioles are arteries that are hardly visible to the naked eye. They are under 0.5mm in diameter. Arterioles branch into capillaries which are extremely small. Capillary walls are only one cell thick in fact, capillaries are so small that it takes ten of them to make up the width of one human hair. Even though capillaries are very small, they form vast networks. Capillaries are so important because Oxygen and nutrients care glucose are exchanged through them and to the body.Veins take blood back to the heart. First, venules, small veins, take blood from capillaries and into a vein. The structure of vein walls is quite confusable but vein walls are thinner.Because most veins have to travel up to reach the heart, they have to fight gravity to get the blood back up thit her so veins throw in equipped with valves which lay aside blood from flowing downwards. Veins that carry blood from the head do not have valves because blood coming from the head does not have to fight the crusade of gravity.If valves dont close properly it can cause major problems this is called venous wane disease. If the veins dont close, deoxygenated blood cant get back to the heart. This causes severe tissue damage. Symptoms overwhelm aching, burning, swelling, itching, discolouration and ulcers.thither are approximately five litres of blood in the human body and it is the glue that holds the cardiovascular system together without it in that respect would be no need for a heart of blood vessels. Blood carries oxygen, fights infection and stops bleeding and only two parts of the body can survive without blood the lens and cornea of the eye. Blood is made up of three parts red blood cells, bloodless blood cells and platelets. cerise blood cells are made in the bone marro w and there are approximately 5,000,000 red blood cells in just one drop of blood. Red blood cells carry oxygen and carbon dioxide throughout the body. Red blood cells that carry oxygen are red and red blood cells that carry carbon dioxide are purple. They are shaped like concave disks.Sometimes the body does not have enough red blood cells and this causes anemia. Anemia is usually caused by a lack of iron. Symptoms allow in lack of energy and a pale skin colour.White blood cells also originate from the bone marrow. White blood cells are translucent and have a nucleus. White blood cells use proteins and enzymes to fight infections. There are five types of white blood cells basophils, eosinophils, neutrophils, lymphocytes, monocytes. Though most white blood cells only sound for a short time, some live for months or even years.Platelets are tiny cell fragments that are born(p) in the bone marrow with red and white blood cells. Platelets aid in turn so when a blood vessel is damag e, platelets come to the rescue and seal the leak.Sometimes, platelets dont do their job and cause hemophilia. What that means is clotting does not occur so the slightest bump can cause bleeding to joints. This can cause nerve damage and muscular atrophy.Though strokes reach the wizard, they are really a problem with the circulatory system. They are caused when platelets do their job a little too well and cause a blockage to an artery pencil lead to the head (usually the carotid artery).If an artery leading to the head is blocked, the brain cannot receive oxygen and this causes a portion of the brain to die. Individuals suffering from a stroke usually have early exemplar signs like numbness, blindness or slurred speech.Those warning signs usually pull through even after a stroke and a stroke can even cause paralysis but these effects are not permanent. After a stroke, the individual can usually be rehabilitated and the damaged portion of the brain can again become functional bu t the person may never be the same again.A park problem with the circulatory system is hypertension. Hypertension is better known has high blood pressure. Though hypertension is usually caused by smoking, lack of exercise, obesity, or diabetes, it can also be hereditary.A sphygmomanometer-better known as a blood pressure cuff- measures blood pressure-two pressures, actually. The blood pressure cuff measures systolic pressure and diastolic pressure. Systolic pressure is high when the ventricles have contract and diastolic is low when the ventricles have relaxed. If your diastolic pressure is greater than ninety or systolic pressure is greater than one-hundred-forty, you have high blood pressure.High blood pressure is often called a silent killer whale which means most people arent aware they have it until they have a heart attack of stroke. Medications and lifetime style changes can help statement blood pressure but the best way to control it is to keep a healthy diet (low in sal t), exercise regularly and have your blood pressure checked on a regular basis.arrhythmia is a heart condition. It is basically just an irregular heartbeat. Common symptoms are heart palpitations or pounding in the chest that means your heart is whacking irregularly fast. Other symptoms include light headedness, fainting, shortness of breathing time and fatigue these are symptoms of your heart beating irregularly slow. If your heart is beating too slowly, your brain does not receive enough oxygen and neither does the rest of your body.Sometimes, surgeries can be done to get the heart to beat regularly but they arent always successful. More common treatments include medications and life style changes.The very best thing you can do for your cardiovascular system is exercise regularly and be sure to have a healthy diet. This will help to prevent disorders in the cardiovascular system but does not always keep them from occurring.Though many things can go wrong with the cardiovascular s ystem, worse things would happen without it and all life on earth as we know it would end. Blood goes on a journey so spectacular that none of us can experience it.