The Heart Essay -- Biology

â€Å"The heart† The Heart is a very important organ in the body. It is what keeps your blood flowing and your organs going. It is a tireless muscle that pumps more than two thousand gallons of blood every day. The blood that is pumped is filled with nutrition and oxygen (Colombo 7). It travels through out your body in less than sixty seconds. So it needs to be taken extra good care of. When abuse is put on the body, the heart’s performance is not at its best. The Heart is a major organ that needs loving and care. Everyone has only one and by abusing it, they are cutting their live span little by little. People can live their lives freely but how they choose to live them could be the difference between life and death. The heart is a pump with four chambers made of their own special muscle called cardiac muscle. Its interwoven muscle fibers enable the heart to contract or squeeze together automatically (Colombo 7). It’s about the same size of a fist and weighs some where around two hundred fifty to three hundred fifty grams (Marieb 432). The size of the heart depends on a person’s height and size. The heart wall is enclosed in three layers: superficial epicardium, middle epicardium, and deep epicardium. It is then enclosed in a double-walled sac called the Pericardium. The terms Systole and Diastole refer respectively and literally to the contraction and relaxation periods of heart activity (Marieb 432). While the doctor is taking a patient’s blood pressure, he listens for the contractions and relaxations of the heart. He also listens for them to make sure that they are going in a single rhythm, to make sure that there are no arrhythmias or complications. The heart muscle d oes not depend on the nervous system. If the nervous s... ... initiative to live longer by doing a few extra steps, or eating cheerios instead of a thick juicy donut. It may not seem like much but it is. The Heart is a major organ that needs loving and care. Everyone has only one and by abusing it, they are cutting their live span little by little. People can live their lives freely but how they choose to live them could be the difference between life and death. By eating healthy, exercising, people can live longer lives. People who smoke, drink, and don’t exercise normally have to look forward to a lot of testing such as: cat scans and x-rays. They get to go through surgeries, such as: Bypasses and stents. Eventually doctors can no longer do any more for them but place them on machines that will continue the heart’s job. Why not choose to live life to the fullest and take care of one of the body’s most important organs.

Advantages and Disadvantages of a Multi-Racial Society Essay

Nowadays 99% of the modern world countries have become a multiracial society, whether it is relative to their language, religion , culture, or traditions . Also universities , schools and other societies have become multiracial, it is not necessary for the whole country . And today with all aspects of economical, social and other types of growth , it is distinguishably linked to the globalization and the immigration of people to other countries, which has become more and more common . But can a multiracial community exist with no problems attached ? A multiracial society is very rich in culture heritage , where you get the opportunity to learn about other cultures. A multi-racial society is also a multi-linguist society so people living in such societies benefit from the richness of languages and are thus able to speak different languages , there is also a wide variety of traditions, customs and festivals that are being carried out in such countries. In addition with the fusion of cultures food becomes national, people are able to eat a wider variety of food, learning to prepare them in different ways, even celebrations of festivals become national. In addition a multi-racial society teaches people how to respect and understand the religion and cultures of others. Therefore this leads to tolerance. Moreover multi nationality makes the country more dynamic because there are people who come from different places and this can help to develop new ideas about how to make our lives better. In these multi-racial societies very often there are misunderstandings, which lead to conflict . Fanaticism is another factor, which creates conflicts in a multi-racial society. These conflicts and divisions between people is further increased by politicians who practice racial and ethnic politics, only to obtain votes. Fanaticism also encourages people in becoming racist which then leads to intolerance and misunderstandings. Not to mention that sometimes some religions in some societies get stereotyped in an insulting way, which creates clashes between two cultures or more . To conclude I will say that peace remains very fragile, it can break at any time. So we should not let anyone gamble with it. We should neither allow ourselves to be manipulated by the governments nor the people in power.

Polluting Planet Earth essays

Polluting Planet Earth essays Why is pollution taking place? For a long time humans have been carelessly polluting the planet on which they live. Pollution is the introduction of contaminants into the natural environment that causes adverse change. The three major places pollution occurs are in the water, air, and on land. Water pollution is one of the biggest problems the world is facing with tremendous impact to the life of the human race. Water pollution is the contamination of water bodies such as lakes, rivers, oceans, and groundwaters caused by human activities. One major cause of water pollution is oil spills. In March of 1989 at Prince William Sound in Alaska, the Exxon Valdez oil spill occurred. The drivers of the Exxon Valdez noticed icebergs in their planned route. Instead of trying to weave through the icebergs, they decided to go into another direction. While Exxon was on their new route, the oil tanker hit Bligh Reef in shallow land. The Exxon Valdez spilled approximately 10.9 million gallons of oil. The oil impacted over 1,100 miles of non-continuous coastlines in Alaska and covered over 11,000 square miles of the ocean. This oils spill killed hundreds of thousands of birds, fish, and animals immediately. The Exxon Valdez oil spill is considered one of the worst human caused marine environmental disasters ever to occur. Years later scientists have noticed higher death rates among sea otters and some other species by the Exxon Valdez oil spill. Air pollution is the introduction into the atmosphere of chemical particles or biological materials. Although air pollution comes from many sources; The Great Smog in 1952 is one of the worst man made air pollution disasters that occurred. In London, The Great Smog was caused by punishing alignment of weather patterns and coal pollution. At this time the city was pockmarked with factories and power plants that incinerated thousands of tons of carbon into the atmosphere. Also because of such a col...

Dreams of Aviation essays

Dreams of Aviation essays Ever since I was just a youngster I have always had a fascination with airplanes. When I took my first trip on an airplane I was really uneasy about it. Then they brought me into the cockpit and let me see all the instruments and we talked about how planes worked. My fears all turned into fascinations and I realized how relaxing being in the air really was. After that I was almost sure that I wanted to get involved with planes. I found out about a program that could help me become more involved with planes and maybe help me get a career in an aviation field of work. The program I got into is called Civil Air Patrol. Civil Air Patrol (CAP) is an Air Force auxiliary that carries out non-combat missions on behalf of the U.S Air force. The average age of members in my squadron is 15. The group has grown from 14 enrollees last year to 20 directly after the 9-11 disaster. The program teaches Aerospace, leadership, and general skills necessary in emergency situation. For example, the CAP is responsible for most search and rescue mission in the United States. We learn skills in mock missions called SAREXs. (Search and Rescue Excercises) I joined CAP because I wanted to develop personal discipline. CAP allows me to receive as well practice personal discipline. I earn medals when I complete assignments and tests. These medals prove that I have completed the basic skills needed to attempt more advanced aviation training programs in the near future. The program has helped improved my self-esteem and I know that I am a part of a valued team in my community. I also joined because someday I aspire to be a pilot with my own charter airplane company. In the future, joining the Air Force could help me by allowing me a chance to further my knowledge of aircraft and also experience aircraft first hand, and also help me earn flight hours. The Air Force would be a benefit to me because I would be around many others with s ...

Free Essays on Onegin

of good ... Free Essays on Onegin Free Essays on Onegin In the original â€Å"Eugene Onegin† was written in Russian by A.S. Pushkin. Pushkin was a famous Russian writer known for such novels as â€Å"Queen Of Spades†, â€Å"Belkin Tales†, â€Å"Eugene Onegin†, such poems as â€Å"Ruslan and Ludmila†, â€Å"Tzar Sultan†, and many others which greatly influenced the 19th century literature of the Russian culture. There were four translations during 125 years since Pushkin’s death. From the early age Pushkin lived in the highest Russian social and intellectual circles. He was educated in Tzarskoe selo where he was prepared to take on high responsibilities. Pushkin’s aristocratic background was reflected on Eugene Onegin. Just Onegin Pushkin was engaged in dancing, gambling and dueling. However, in the end of the first chapter, Pushkin pointed out that even though he applied some characteristics of his own to the Eugene’s character, Onegin was not drawn from Pushkinâ€⠄¢s self. They are two different individuals that should not be compared. In the first chapter, Onegin was taking care of his sick uncle, who was at the death’s door. He set next to his bed every day and night, brought him medicine, spoke to him and just made him feel better. Onegin soon left his home and went to Saint Peterburg. In the city Onegin began to party, went to theaters, balls and lived his life in his pleasure. Throughout the whole chapter, everybody around thought very well of Onegin and respected him. He seemed intelligent, smart and delicate. Many women were interested in Eugene, many admired him. He liked to capture women’s attention and liked to be noticed. He delicately flirted with women making them smile. However, for Eugene, women’s attention and admiration was only a game, and all of them were short, by passing romances. In the end of the first chapter, Onegin get’s an epistle from his home which says that his uncle is dying and wants to say his last words of good ...

How is Walmart effecting our economy Essay Example | Topics and Well Written Essays - 500 words

How is Walmart effecting our economy - Essay Example Additionally, Wal-Mart has a tendency of providing a wide range of products for its consumers especially in the rural areas according to Hicks (2007). This is especially true of supercenters which sell products ranging from garments, cuisine, and hardware to optical services. The lower prices and the high accessibility to products in one area offers direct benefits to local consumers economically. The magnitude of the benefits varies with different regions depending on how the prices are low, and the distance the consumers have to travel in order to access the wide array of goods. The fact that Wal-Mart can trade its products at cheaper prices than other retailers provides an intense risk to the feasibility of other retailers near them. In most cases, the newly established retailers are forced to close or downsize their business when Wal-Mart opens a new branch in that region. This is because the number of their customers tends to decline as they shift to Wal-Mart. Other businesses providing products and services not offered by Wal-Mart tend to benefit due to the proximity with Wal-Mart which attracts many customers as suggested by Anderson (2011). These include businesses providing home furnishings and some foodstuff. Nevertheless, despite the positive effect, Wal-Mart as a whole has depressing impact on the operation of other local retail outlets. A typical Wal-Mart store employs around150 to 350 workers while a supercenter employs around500 employees. However, most of these workers are employed on part time basis. In evaluating the overall effects of Wal-Mart, the new jobs need to be balanced against jobs lost by the competing businesses. Moreover, with Wal-Mart’s extremely centralized supply-chain management, wholesalers and distributors at the local level are likely to experience breakdown on the demand of their services according to Renkow (2005). A good example of the general adjustments arising in the local job market as a

PURE Essay Example | Topics and Well Written Essays - 1250 words

PURE - Essay Example Even demand was increasing for raw foods, those that were thermally processed at 120 degrees, which is representative of the planet’s ambient temperature, which was said to aid in digestion, sustain natural healthy bacteria levels, and ensure maximum nutritional content. The main objective was to establish an eatery that would have market-centric relevance, especially in relation to food availability on the menu and the internal decor. Utilizing a naturalistic environment consisting of woods, natural greenery, and a variety of displayed vegan and raw products, Graham and Buob wanted to create legitimate relationships with customers that valued these naturalistic elements supported through knowledge exchanges with consumers in an eco-sustainable environment. By promoting an environment where vegan and natural foods consumption lifestyles could merge with ownership and staff, the objective was to create a revolutionary type of restaurant that could cater to this expanding market niche. The Main Problems at Pure Problems with the foods regulatory environment posed reputational risks for the variety of products that were procured by Pure. The United States Department of Agriculture allowed or five percent of an organic product’s attributes to contain non-organic materials. ... This meant that Pure might not be able to promote products to a holistic niche market since they maintained no control over procurement regulations and would likely not gain the attention of mainstream consumers either. Pure also had to promote a higher pricing model due to the high costs of procurement for organic and vegan products along the supply chain. Mainstream consumers were more attracted to fast food products and packaged/processed foods due to their lower pricing structure. The competitive environment provides many different lower-priced restaurants which would be a hindrance in attempting to appeal to the price-sensitive consumer market segments. Coupled with a mainstream sentiment that vegan and organic products are tasteless and boring related to flavor, it would be very difficult for Pure to attempt to market to the majority of consumer segments, thus being forced to cater to only the niche market segments that legitimately valued natural foods. Furthermore, the growth of availability of organic products at regional grocery stores represented a credible threat of substitutes on the market. Pure was unsure about how the ownership would effectively promote the motivation for dining out to consume natural products when grocery stores made these products widely available, especially important in a market with only 17,000 residents making an average of just under $22,000 annually; below the provincial earnings average. A market environment that is limited in terms of available consumers with legitimate resource restrictions posed a significant threat to the high price model necessary for Pure to remain profitable. These restrictions, coupled with the cultural characteristics in Collingwood to enjoy recreational activities that made