The Importance of Maintaining Health and Healthy Lifestyle Practices Short Answer Essay Example for Free

The Importance of Maintaining Health and Healthy Lifestyle Practices Short Answer Essay Q1. Describe the mechanics of inspiration and expiration in a resting person Breathing also referred to as ventilation is involved with the air movement into and out of the lungs to the atmosphere. The breathing process comprises of two phases, which is inspiration and expiration. West (2014) indicated that the main muscles that are involved in the breathing movements are the diaphragm which forms the chest cavity floor, the intercostals muscles that are attached to the ribs. During the process of inspiration, the external intercostals muscles and diaphragm contract allowing the air to flow in. Petechuk (2010) indicated that the diaphragm moves down during inspiration and this increases the volume of the chest (thoracic) cavity. On the other hand, the external intercostals muscles pull the ribs outward and upwards. This expands the rib cage and further increase the chest volume. According to Ionescu (2013), the increase on the chest volume lowered in the lungs the air pressure as compared to the atmospheric air. However, because the air always flows from a high pressure region to an area of low pressure, the air will travel through the conducting airways of the body into the alveoli in the lungs. The conducting airways of the body include the nostrils, the throat, larynx and the trachea. Expiration in resting person has contrasting muscular activities to inspiration of a resting man. During expiration of a resting man, the external intercostals muscles and the diaphragm relax. This restores the thoracic activity to its smaller (original) volume, and this forces the air out of the lungs into the atmosphere. For an adult who is healthy and is at rest, the breathing mechanism sets up a rate typically between 16 and 20 breaths in a minute. Q2. Discuss how lung volumes change in response to vigorous breathing (forced inspiration and expiration) and what additional muscles will be used to ensure these volumes are met During forced inspiration or expiration also known as vigorous breathing, the lung volumes changes because of some additional usage of muscles. Forced breathing normally occurs when a person is engaging in a rigorous activity of is exercising (Martin, 2012). It may also be described as a deeper breathing and applies more musculature for expiration and inspiration. According to Nieman Presidents Council on Physical Fitness and Sports (U.S.) (2013), when an individual is exercising, there is an increased demand for oxygen in the body and also an increased ventilation of the lungs. Furthermore, the frequency for deflation and inflation increases and the quantity of air that is breathed in and out increases too. West (2014) indicated that during the inspiration process, the additional muscles that are attached to the sternum and the ribs helps in raising the ribcage. On the other hand, during forced expiration West (2014) asserted that the internal intercostals muscles contract and therefore pulls down the rib cage more quickly. Moreover, the abdominal muscles also contract, and therefore push up on the diaphragm. This forces more air to move out of the lungs. This movement of the diaphragm, internal intercostals muscles and the abdominal muscles helps individuals to breathe more deeply and quickly. Both expiration and inspiration are active processes now that require the contraction of the muscles. As an individual inhale, the diaphragm contracts and moves downwards before flattening out. This allows the ribs and the lungs to expand in all planes, and thereby increasing the thoracic cavity volume. Similarly, Petechuk (2010) explained that the abdominal wall comprises of four layers, with the transverses abdominis muscle being the deepest layer and supports the trunk. During a forced exhalation, Petechuk (2010) pointed out that the traverses abdominis muscle starts to contract, and this increases the abdominal pressure Q3. Describe any four normal age related changes to the anatomy and physiology of the respiratory system in healthy elderly adults (over 65 years) Decreased strength of the respiratory muscles. The diaphragm, intercostals muscles and the abdominal muscles that help in the process of breathing will decrease and the effect is that inadequate amount of oxygen will be inhaled. Furthermore, the amount of carbon iv oxide will be higher because of the weaker respiratory muscles to help in exhalation. The implication of the decreased strength of the respiratory muscle is that there will be reduced functional reserve of the pulmonary with no change at rest, while with exertion; it will result to decreased exercise tolerance and dyspnea (Lalley, 2013). The chest wall will become stiffer with reduced compliance. This will lead to decreased chest and lung expansion and respiratory excursion with less effective exhalation. Furthermore, the respiratory rate will fall to about 12 to 24 breaths in a minute. Stiffness of the chest wall may be because of the stiffness or weakness of the respiratory muscles, the diminished strength in the chest wall or pain associated with the age on the skeletal system. The ribs may be affected also be affected with osteoporosis and therefore make the chest wall stiff (Farley, McLafferty Hendry, 2011). Decreased response to hypercapnia and hypoxia. The implication is the decreased cough, and also foreign matter/mucus clearance. Hypoxia which is the condition associated with minimal or no oxygen will result because diminished energy to enable inhalation of the aged individual. Therefore, less amount of oxygen will be supplied in the whole body (Lalley, 2013). Diminished macrophages and cilliary activity, hence resulting to decreased cough reflexes and drier mucus membranes. This will lead to increased risk of brorichospasm and infection with airway obstruction (Farley, McLafferty Hendry, 2011). Q4. Describe three effects long term exercise has in maintaining a healthy respiratory system Because of the long term exercise, the pulmonary ventilation will increase because of the stimulation of the respiratory centers found in the brain stem. This will help in increasing of air sacs in the lungs. Furthermore, it will help in clearing out of any mucus in the respiratory system that may be in (Ionescu, 2013). Furthermore, long term exercises helps in increasing the capacity of the lungs. Long term exercises will enable the respiratory system to be healthy especially the lungs. Thos will lead to production of a greater number of the alveoli, and those will increase the tidal volume as well as the vital capacity of the lungs The strength of the diaphragm muscle will also be increased with long term exercises. Increased strength of the diaphragm will helpful especially in forced expiration and when individual engages in exercises. Long term exercises will make the lungs to supply enough air to the body cells faster. This will make the cells to use the air in the more production of ATP. Similarly, it will help the cell in removal of the carbon iv oxide and therefore prevent impairing of the blood (Nieman Presidents Council on Physical Fitness and Sports (U.S.), 2013). References Lalley, P.M. (2013) The ageing respiratory system Pulmonary structure, function and neural control. Respiratory Physiology Neurobiotogy 187 199-210 West, J. B. (2014). Mechanics of breathing. San Diego, Calif: West ; [New York : for loan or sale by Audio Visual Medical Marketing. Petechuk, D. (2010). The respiratory system. Westport, Conn: Greenwood Press. Ionescu, C. M. (2013). The human respiratory system: An analysis of the interplay between anatomy, structure, breathing and fractal dynamics. London: Springer. Martin, D. E. (2012). Respiratory anatomy and physiology. St. Louis, Mo: Mosby. Farley, A., McLafferty, E., Hendry, C. (2011). The Physiological Effects of Ageing. Hoboken: John Wiley Sons. Nieman, D. C., Presidents Council on Physical Fitness and Sports (U.S.). (2013). Does exercise alter immune function and respiratory infections?. Washington, D.C: Presidents Council on Physical Fitness and Sports. Source document

Platos Communism :: Communism Essays

Elites: Elites not masses, govern all societies, but in whose interests do they serve.   Ã‚  Ã‚  Ã‚  Ã‚  Elites are inevitable in all societies   Ã‚  Ã‚  Ã‚  Ã‚  According to both Madison and Plato, factions will inevitably occur within society, the way to address this is viewed in two different ways by Plato and Madison.   Ã‚  Ã‚  Ã‚  Ã‚  Plato sees within society an inherent flaw of two cities, a city of the rich and a city of the poor. He rejects oligarchy, the rule of few over many, because he believes that â€Å"absolute power corrupts absolutely† and rejects democracy for the incompetence within the system because it lacks people properly schooled in the Plutonian tradition and sees the violence inherent in the system, for: existent in all forms of government exist the extreme violence and selfishness of party struggles for factions within society.   Ã‚  Ã‚  Ã‚  Ã‚  Plato would remove the causes of factions, choosing to give up further liberties to protect the good of the people. His theory is similar to the state of nature, believing that societies are formed to meet the needs of the people. Because of the inherent yearning for power within a few elites, Plato would remove these feelings of selfishness, with his own form of Communism.   Ã‚  Ã‚  Ã‚  Ã‚  Plato’s communism would take two main forms which meet in the abolition of the family. The first of the two forms would be to set up a new form of hierarchy: Philosopher king, who would rule by merit of vision and capacity to realize that vision in reality. Guardians, who would serve as the military/ruling class of society, merchant class which serves as a middle class, a buffer between the poor and the rulers. This sunders in two the idea of a city of rich/ city of poor. However the main thing to note is that the rulers must give up certain freedoms in order to attain their position of power.   Ã‚  Ã‚  Ã‚  Ã‚  The rulers must give up the right to own property, effectively removing self-interest. Anyone can be a ruler as long as they MERIT the position. Also, the must live in common barracks style living and eat at a common table, facilitating discussion and equality amongst them. Also they all must be schooled in the Plutonian Tradition.   Ã‚  Ã‚  Ã‚  Ã‚  The second form of communism would be the abolition of a permanent monogamous sexual relationship. This removes loyalty to family/lover. Lovemaking would be more like livestock breeding and would occur at the behest of the ruler.   Ã‚  Ã‚  Ã‚  Ã‚  Plato believed that if the unity of the state is to be preserved and marriage and property stand in the way than they must be abolished.

An Analysis of A White Heron by Sarah Orne Jewett Essay

â€Å"A White Heron†, written by Sarah Orne Jewett, depicts a young girl whose love great love for nature and animals meant her and her family’s needs. Sylvia’s knowledge of birds including the white heron, she had to make a choice between saving the white heron and helping her family. Sylvia does both of these things because she is close to nature. Sylvia’s great understanding of the animals comes from her love for nature and wild creatures. Sylvia knows a lot about many different types of birds. So Sylvy knows all about birds, does she? ‘ The hunter exclaimed, as he looked at the little girl who sat, timid but extremely sleepy in the moonlight. The hunter finds out that Sylvia knows a lot about birds and that she may be able to help him find a white heron for his bird collection. Sylvia’s love for the outdoors is also very obvious when she says that she would have liked to have her home to be outside rather than in doors because of its beauty and peace. Sylvia said, this was a beautiful place to live in, and she never should wish to go home. It is obvious that Sylvia is happier living in nature, rather than in a humid house. She also likes to watch the animals in their natural environment. With Sylvia’s extraordinary knowledge of birds, Sylvia has a decision: either to help support her family or to save the white heron from the hunter. Sylvia has an idea where the white heron is, and may possibly be able to help the hunter find the bird for his collection. Sylvia knows that she would be awarded much-needed money for directing the hunter to the heron, but she decides that she cannot play any part in bringing about the bird’s death. The hunter eventually leaves Sylvia without his prize. Sylvia shows her love for nature when she does not sell the white heron for money. Sylvia went with the hunter to find the white heron and had found it. When Sylvia and the hunter find the white heron he offered her money for it but she refused. When she saw the heron Sylvia does not speak after all, and the hunter’s eyes are looking straight at Sylvia. He can make them rich with money; he has promised it, and they are poor now. This shows how much Sylvia loves the animals and how she would never want to harm any of them, not even for the chance to become rich and solve all of her family’s problems. In Sarah Orne Jewett’s, Sylvia’s love for nature and animals goes beyond her concern for her and her family’s needs. Saving the white heron was a choice that Sylvia to made proving that her love for nature was much stronger that her family’s needs and her own.

Cuban Missle Crisis Essay - 1196 Words

Cuban Missile Crisis Nikita Khrushchev and the Cuban Missile Crisis The Cuban Missile Crisis of 1962 was the closest the world ever came to full-scale nuclear war. When the Soviet Union placed offensive nuclear missiles in Cuba, President Kennedy interpreted the act as one of hostility that would not be tolerated. However, the situation was blown way out or proportion by the president, American media, and ultimately the citizens of the United States. The Soviet Premier, Nikita Khrushchev, was reacting to the Bay of Pigs Invasion of Cuba, US Missile installations along the Turkey/Soviet border, and the clear anti-Communist policy of the United States. Khrushchev was born in Kalinovka in southwestern Russia. He was raised in a poor†¦show more content†¦The Bay of Pigs invasion was a prime example. This overt military action took place when the CIA funded a paramilitary force of rebel Cubans to invade Cuba and overthrow Castro. Kennedy refused to give the invasion strong American military force so it ultimately failed, thus becoming a great embarrassment to the United States. Not only was it an incredible failure and embarrassment, but it was also a US sponsored military offensive against Cuba, a communist country and Soviet ally. It was a challenge to the governments of both the Soviet Union and Cuba. In addition to the attack on Cuba, Khrushchev was also faced with US missile installations in Turkey and Italy that posed a serious threat to the Soviet Union. The installations in Turkey were less than 150 miles from the Soviet border. The installations here were MRBMs, Medium-Range Ballistic Missiles, and were nearly identical to the missiles Khrushchev had installed in Cuba. He was merely trying to prevent the US from gaining the upper hand in a power struggle, which could have meant serious disaster for the Soviets. Khrushchev, just like Kennedy and the rest of the United States, didn’t want the enemy to gain a nuclear advantage. He was trying to protect his country and prevent nuclear disaster. The hysteria created in the United States as a result of the Soviet installations was immense. The US media was calling Khrushchev’sShow MoreRelated Cuban Missle Crisis Essay3174 Words   |  13 PagesCuban Missle Crisis Many agree that the Cuban Missile Crisis was the closest the world ever came to nuclear war; but exactly how close did it come? The Crisis was ultimately a showdown between the United States and the Soviet Union from October 16 to October 28, 1962. During those thirteen stressful days, the world’s two biggest superpowers stood on the brink of a nuclear catastrophe. The Crisis started as a result of both the Soviet Union’s fear of losing the arms race, and Cuba’s fear of USRead MoreCuban Missle Crisis and the Realist Perspective Essay1172 Words   |  5 PagesThe Cuban Missile Crisis of 1962 brought the world closer than it had ever been to nuclear war. This makes the crisis one of the most essential events in international affairs history, demonstrating a great example of the realist perspectives and other important aspects of international relations. Primarily, the origins of the Cuban Missile Crisis can be readily attributed to the realist perspective. In 1961, President John F. Kennedy launched the Bay of Pigs Invasion of Cuba, which was a thwartedRead MoreThe Cuban Missile Crisis Essay495 Words   |  2 PagesThe Cuban Missile Crisis The Cuban Missile Crisis of October 1962 was the closest the world has ever come to nuclear war. The crisis was a major confrontation between the United States and the Union of Soviet Socialist Republics. 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