Cardiovascular and Respiratory Systems - Free Essay Example

Sample details Pages: 2 Words: 596 Downloads: 2 Date added: 2019/10/10 Did you like this example? The Cardiovascular System consists of two components which are the heart and the blood vessels. The heart performs the function of pumping blood while the blood vessels act as the channels through which blood is transported to various parts of the body. The process of blood circulation to different parts of the body is divided into two functional structures which are the pulmonary circuit and the systemic circuit. The pulmonary circuit refers to the flow of blood through the lungs while the systemic circuit refers to the movement of blood to other parts of the body. The cardiovascular system has the heart as its primary organ, and it performs vital functions that facilitate circulation of oxygenated blood throughout the body. The contractions of the heart create pressure on the blood vessels which pushes blood to all parts of the body. The heart also pumps blood through the lungs where it receives oxygen and gets rid of carbon dioxide. This oxygenated blood is usually transported through the arteries while the blood rich in carbon dioxide is transported through the veins. Notably, the blood is responsible for transportation of components such as oxygen, nutrients, waste and even enzymes. The exchange of nutrients and oxygen contained in the blood occurs across the walls of capillaries thus refreshing the blood and tissue fluid. Don’t waste time! Our writers will create an original "Cardiovascular and Respiratory Systems" essay for you Create order The respiratory system in humans refers to a combination of several organs which are responsible for oxygen intake into the body and expulsion of carbon dioxide. The lungs are the central organ in the respiratory system as most of the respiratory processes take place in them. When we breathe, air rich in oxygen is taken in through the nostrils, the sinuses into the lungs. The sinuses are hollow spaces in the skull which allow air to go through and help in regulating the temperature of the air breathed in. The trachea which is also called the windpipe carries air down into the lungs, and it branches to into the bronchi which are the two tubes that attach to the to each lung. The trachea is responsible for filtering the air leaving it free of any impurities. The bronchial tubes contain tiny hairs which carry mucus, a sticky substance that traps any impurities that may have invaded the lungs. Mucus, a viscous fluid, collects dust, germs and other matter that has invaded the lungs. We ex pel mucus when we sneeze, cough, spit or swallow. The right lung is larger than the left lung as it has three lobes while the left has two. The left lung is smaller so as to give enough space for the heart which also plays a significant role in the respiratory processes. The lung lobes contain small spongy sacs called alveoli, which are the structures that facilitate the exchange of oxygen and carbon dioxide. The alveoli have very thin walls made up of a single layer tissue called the epithelial cells and tiny blood vessels known as the pulmonary capillaries. Air is exchanged through the capillaries where oxygen is absorbed, and carbon dioxide is expelled and breathed out. The blood rich in oxygen goes back to the heart where it is pumped to the rest of the body. The circulatory and the respiratory system work coherently to ensure proper circulation of oxygen throughout the body and also in the expulsion of carbon dioxide out of the body. Oxygen is a critical component that facilitates cellular functions like oxidation. The blood circulation is done by the heart whereby it pumps blood to the lungs as well as to the other parts of the body.

Events that Led up to the Creation of the Patriot Act

The Patriot Act was created in the year of 2001, the same year that the tragic day, 9.11, occurred. On September 11th, 2001, 19 terrorists working for Al-Qaeda hijacked four planes, and caused this day to be forever remembered in the history of the United States. At 8:46 AM on September 11th, the first hijacked plane (American Airlines Flight 11) crashed into the North Tower of the World Trade Center. Specifically, it crashed into the 93-99th floors, trapping everyone on the floors above. Many people had doubts about this being a terrorist attack; they thought that it was just an accident. However, all of those doubts were removed when the second hijacked plane (United Airlines Flight 175) crashed into the South Tower of the World Trade†¦show more content†¦However, the positives of this government action outweigh the negatives greatly. People are safer because of the Patriot Act, but there’s always a downside. People have a great way of looking at the negatives and n ot being able to see that this is for the greater good. Personal security is not very personal anymore, as the police can look at what you do online openly, without a warrant. But, if you’re not doing anything wrong, then you have nothing to worry about. The position held by those who disagree with my view would believe that the Patriot Act is a complete and total violation of Americans rights. They would believe that this is a violation of the fourth, fifth, sixth, and eighth amendments. The act allows the government to get around the Fourth Amendment by allowing them to track who visits which website, and read private emails. (Johnson) Specifically, critics say that this act makes it a lot easier for the federal government to many things, such as obtain information about people, and eavesdrop on telephone conversations. Soon after the Patriot Act was accepted, many people voiced their differing opinions of it. People in civil liberties groups believed that the act took too much freedom away from the people. They believed it violated the 4th, 5th, 6th, and 8th amendments. The 4th amendment states that searches and seizures can only take placeShow MoreRelatedAmerican Revolution : The Great British Army Conquered Parts Of The America n Colonies1027 Words   |  5 Pagesgovernment and the Parliament. The laws created by the British soon divided the colonists into Patriots and Loyalists. Patriots were the Americans who decided to take violent actions in order to make the British stop creating these unfair laws. On the other hand, Loyalists were American colonists, yet they were still willing to stay loyal to the British government. 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Moscow and Grand National Capital Free Essays

1. How did Paris become the model for the Grand National capital city? Paris becomes a model for the Grand National capital city because of its impressive public buildings, but mostly because of the work of Haussmann. Before the transformation, Paris was extremely congested, dirty and unpleasant. We will write a custom essay sample on Moscow and Grand National Capital or any similar topic only for you Order Now It was not unified and it had a lack of an effective transportation system. After Haussmann’s work, Paris becomes a model not only within France but also internationally because of its ideal environment and power. 2. How did Haussmann transform the city in just 2 decades? What was his contribution to the economic development of Paris? Haussmann carved out boulevards through the dense city, and opened up the city. He sold land and helped finance construction of new apartment buildings. Sewer systems and clean water was brought into the city, and space was made for both circulation traffic and armies for control. He even created public restrooms for the city, along with parks and the green areas of the city. Because of Haussmann’s urbanization, Paris grew economically because it became a place that reflected the power of the state and a place of exporting. . Why were the advantages of the Boulevard system? What were the disadvantages? The Boulevard system created a sense of orientation for the city as well as dividing it evenly. It made transportation easier and organized the city in a way. Some disadvantages might be that some people don’t like a repetitive look of the boulevards and that it could create traffic. 4. What was the social de mocratic vision for Paris after World War II? What were its advantages and what were its disadvantages? The social democratic vision for Paris after World War II included things such as national healthcare, free education systems, family allowances, pensions and unemployment insurance. The development of the subways and better transportation systems were some advantages of the changes after WWII. Paris also builds new modern buildings, such as the subsidized housing buildings. However even though the housing was built for the white French people, immigrants later started to move in which caused social problems and separations 5. What are some of the problems that have emerged in recent years in Paris as a result of neo-liberalization and market orientation? What are some of the benefits? Some of the problems that have emerged recently in Paris are that there is still separation between the social classes in the suburbs and then in the city. Paris has been moving towards the more global standard of international development as opposed to a highly regulated system. Consumer choice has become more popular and this allows businesses in Paris to have more freedom in the market. How to cite Moscow and Grand National Capital, Papers