Physiological disorder

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Physiological disorder

Patient with Asthma

Mrs Serena Rose is a single mum of two daughters one is 10 years old and the other one is 5 years old, her husband has died and it was very difficult for her to deal with the loss of her family member. Serena has started to smoke after her husband died without quitting it once, this has brought her a lot of stress recently and very difficult for her to breathe.

Serena went outside to do physical exercise so she can loose weight as she though she was over weight. When she started running she found herself short breath and when she stopped she could hardly breathe. She found it really difficult to sleep at night time as she felt tightness in her chest. She got really worried and she decided to go to see her GP doctor. When she went to her GP her doctor advised her to take some tests to see what was wrong with her respiratory system and especially the airways, then she found out that she developed asthma she was given an inhaler to keep with her at all times wherever she goes. She was put on the normal dosage because her asthma is not as bad as others. She was also given a peak flow to keep beside her bed while she sleeps; this is to make sure that she has one at arms length in case of an asthma attack; as asthma can get worse at night. Mrs Serena Rose understood that her asthma condition will never disappear and she has to make a life style change to her life and especially for her two daughters because in many cases if parents suffer from asthma the condition will be passed to the children and aseptically when smoking around her children. The damage that asthma has cause to the organ is affected by mainly he lungs as that is where the air we breath passes through to get to the heart. Asthma causes the lungs to tighten up when the person is short of breath which make it hard to breathe normally.

Mrs Serena Rose knew what has caused her asthma and she had to leave smoking for the sake of her health so it can improve. Mrs Serena Rose was given an inhaler for 5 months and she keeps it wherever she goes.

Patient coronary heart disease

Mrs. Tanya Jenkins is 38 years old, she suffer from coronary heart disease. She’s a mother of children and lives with her three children and her husband.  She started smoking since she was 18 years old and also suffers from high cholesterol and also diabetes. She does not work as she takes care of the children and also her husband, but her husband works.

Tanya visited her family physician for a routine checkup. She appeared to be healthy part form her diabetes and high cholesterol. But Tanya started feeling chest pains she said that the chest pains were strong and also discomfort. She said that many times she felt very dizzy, shortness of breath and also tingling in fingers. Tanya does physical exercise every morning; after she does the physical exercise she feels very short breathiness and makes it really difficult for her to breathe. It usually occurred during an evening walk, which she took after dinner. The chest ache lasted for a very short time and disappeared if she stopped walking for a short while. Tanya does many social activities with her children so she doesn’t keep any stress as that will cause her depression and will make her illness very bad. Tanya takes statins for her cholesterol and she takes meglitinides for her diabetes 

She also mentioned that she had started taking the short evening walks recently on the advice of a friend for her high cholesterol.  When she went for a short walk at evening she felt quite dizzy and also very tight chest pains. She had to go and check to the doctors because she was scared that she might have a heart attack. Tanya has a family history of coronary artery disease; her father was diagnosed with coronary heart disease at the age of 60 years old.  He subsequently underwent triple bypass surgery. The patient's paternal grandfather died of a heart attack at the age of sixty

Physiological disorders

In this part of the assignment I am going to talk about the body systems that my two patients suffer from and I am going to explain their structure and what kind of job they do in our body. Starting with the following: 

(P2) Describe the physiology of each disorder and the factors that may influenced this development.

(CHD) The cardiovascular system

The cardiovascular system is also called the circulatory system. The heart is am pumping device and a closed system of vessels called arteries, veins, and capillaries. The hart is enclosed by a sack known as the pericardium, these are three layers of tissues that form the heart wall, outer layer of the heart wall is the epicedium, the middle layer is called myocardium and also the inner layer is called endocardium The heart has 4 chambers and these are the following:

Right atrium     Right ventricles    Left atrium      Left ventricles 

There are thin walled chambers is which called atria from the veins, the two ventricles are ticked wall chambers that force blood out of the heart. The right atrium receives deoxygenated blood from the systemic veins; where as the left atrium receives oxygenated blood from the pulmonary veins.

Valves of the heart

For the heart to keep the fluids flowing in the atrium the pumps needs a set of valves. The heart has two types of valves that keep the blood flowing in the correct direction. The valves between the atria, ventricles are called atrioventricles vales, while those at the bases of the large vessels leaving the ventricles are called eliminator valves. When the ventricle contract, atrioventriculor valves close to prevent blood from the flowing back into the atria, when the ventricles have a rest the simulator valves will close to prevent blood from flowing back into the ventricles.

Pathway of the blood through the heart

When we describe the flow of the blood through the right side of the heart and then through the left side its very important to know that both atria contract at the same time and the both ventricles contract a the same time. The heart works as two pumps one on the right and one on the left. The blood flows from the right atrium to the right ventricles and this has been pumped to the lungs to receive oxygen. The blood flows to the left atrium then to the than to the left ventricles and this will happen in systemic circulation.

Blood supply to the myocardium

The myocardium of the heart wall is working muscle that needs a supply of oxygen and nutrients to function. The reason why this happens is because the muscle has a network of blood vessels to bring oxygen to the contracting cells and need to remove waste products. The right and left coronary arteries, braches of the atria supply blood to the walls of the myocardium. After the blood passes through the capillaries in the myocardium it enters a system of coronary veins, many of the cardiac veins drains into the coronary anus which opens into the right atrium.

Arteries

The arteries job is to carry blood away from the heart. The pulmonary arteries transport blood that has a low oxygen form the right ventricles to the lungs. The systemic arteries transport oxygenated blood from the left ventricles to the body tissues. The blood is pumped form the ventricles into a layer of elastic attires until the branches result in microscopic arteries called articles, it plays a key role in regulating blood flow into he tissues capillaries. The wall of the artery consist of three layers, the inner layer, the turnip uituma contains simple squalors epithelium, basement membrane and connective tissues. The epithelium is in contact with the blood flow, the middle, the tunica media is a smooth muscle and is usually the thickest layer it provides support for the vessels.

Blood vessels

The blood vessels are the conduct through which blood is distributed to the body tissues. The blood vessels make two closed systems of tubes that end and begin at the heart. The pulmonary vessels transport blood from the right ventricles to the lungs and back to the left atrium. The systemic vessels carry blood from the left ventricles to the tissues in all parts of the body and then after it return the blood back to the right atrium.

Veins

The veins job to carry blood towards the heart when the blood passes through the capillaries it goes into the smallest veins called venues, after that it flows into a larger veins till it reaches the heart. In the pulmonary circuit, the pulmonary veins transport blood form the lungs to the left atrium of the heart,, this blood has a high oxygen because it has just been oxygenated into the lungs. The systemic veins transport blood form the body tissues to the right atrium of the heart. The walls of the veins have three layers as the arteries. These three layers make the wall of veins thinner than the arteries which relate to the fall that blood in the veins has less pressure than in the arteries; this is because the walls of the veins are thinner and less rigid than arteries, and veins can hold more blood.

Capillaries

Capillaries are the smallest of blood vessels that form the connection between the vessels that carry blood away form the heart and then the vessels return blood to the heart. The capillaries job is to exchange the materials between the blood and tissue cells. The tissues like skeletal muscle live and kidneys have capillaries network because they are active and require supply of oxygen and nutrients, other tissues like connective tissues have less supply at capillaries. The smooth muscle cells in the arteries when the branch to form capillaries regulates blood flow form the articles into the capillaries. The roles of the capillaries are the forming of the connection between arteries and veins. Capillaries have a big role in the exchange of gases, nutrients and waste products between the blood and the tissue cells. Substances pass through the capillaries wall, flirtation and diagnosis, oxygen and carbon dioxide move through the capillaries wall by diffusion.

Factors that can increase the risk of coronary heart disease 

Coronary heart disease is caused by built up fat deposits on the wall of the coronary arteries the fatty called atherona is made up of cholesterol and also by other waste substances. The risk of developing athereclosis is increased by the following factors:

Smoking: Smoking is a big risk factor of coronary heart disease. Carbon dioxide monoxide and nicotine put a strain on the heart by making it work faster an also the blood may clot. Other substances or chemicals in the cigarettes damage your coronary arteries leading to furies of the arteries.

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Cholesterol: Cholesterol is a fat that is made by the liver form the fat that we eat in our body. Cholesterol is good for healthy cells but if there is too much in the blood it can lead to coronary heart disease. Cholesterol is carried out in the blood stream by molecules called lipoproteins. There is different type of lipoproteins but the two main ones are low density, lipoproteins (LDL) and high density (HDL) a low lipoprotein is known as bad cholesterol this is because it takes cholesterol form the liver to the cells, low density lipoprotein is build up on ...

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