Chemistry Essays Saline & Fluids in the Body

Chemistry Essays Saline & Fluids in the Body Saline and Fluids Using saline as an example, outline the importance of solutions in the body and what is the concentration of normal saline and how the concentration of saline is controlled in the body and what effects on the cells an increase in saline concentration would have. Our bodies are fifty tosixty percent water, which therefore makes water an essential fluid for ourbodies. The main transporting agent in our body is the cells, and solutions arenecessary to execute functions such as:   Ã‚  Ã‚  Ã‚  Ã‚  Chemical balance   Ã‚  Ã‚  Ã‚  Ã‚  Circulation of blood   Ã‚  Ã‚  Ã‚  Ã‚  Transporting nutrients to the cells   Ã‚  Ã‚  Ã‚  Ã‚  Elimination of waste   Ã‚  Ã‚  Ã‚  Ã‚  respiration The main component ofthe blood, perspiration, saliva, mucus, lymphatic fluids and digestive juicesis water. The function of water also ensures the lubrication of the joints,that the muscles, skin, and organs is moisturized. The temperature of the bodyis also aided by water. Two thirds of water is situatedwithin the cells intracellular, and one third of water is found in the sitesbetween the cells interstitial and in the blood plasma. The composition ofsolutes in the intracellular and extracellular water can vary. A highconcentration of potassium ions is found in the intracellular cells, and a highconcentration of sodium and chloride ion is found in the extracellular cells. It is precarious to thesurvival of the human body that the accurate balance of fluids and salts ismaintained and the right pH acid balance. If the body loses fluids and salts,then dehydration can occur, and this can cause the concentration of salts toalter causing electrolyte imbalance. One of the mostimportant solutions in the body is saline, which is a solution consisting ofsodium chloride and distilled water. Salt plays a perilous function in the accurateoperation of the human body, as well as all other forms of life. The averageperson contains about eight ounces of salt, which facilitates muscles to contract,digestion to occur, the floe of blood, wounds to repair and fluids to beproperly regulated. A litre of isotonic or normal (0.9%) saline contains 154mmol of NaCI, comparable to 9 g of salt or 3.6 g of sodium. The regulation of salineand water equilibrium in the body is an example of homeostasis. Homeostasis isthe preservation of balance, or constant conditions, in a biological organismby means of habitual mechanisms that neutralize influences tending towarddisequilibrium. The correct composition of extracellular fluids and watercontent in the body is maintained by the important role played by the kidneys. Osmolarityis the amount of particles dissolved in a certain volume of fluid. Theosmolarity of fluid can be altered by the volume of fluid or by the quantity ofsolute molecules. In the duration of a day, the kidneys will manage 180 litersof blood, and will produce 1.5 liters of urine. The volume of water excreted bythe kidney is regulated by the anti-diuretic hormone (ADH: also referred toas vasopressin; diuresis means water loss and is therefore referred to as awater loss hormone. If the concentration offluid in the body drops below normal, the osmoreceptors in the hypothalamuswill recognize the resulting increase in osmolarity. ADH will be released bythe hypothalamus, in response to the change in osmolarity. The amount of fluidvolume lost must be replaced by drinking additional fluid, thus ensuring thatosmolarity returns to equilibrium and recovering the fluid loss. If the concentration offluid in the body increases above normal, this will also modify the osmolarityof the circulating fluids. The decrease in osmolarity is regulated by thehypothalamus, which stops producing ADH. In the absence of ADH, the kidney permitsfluid loss from the body. The kidney consists of numerous nephrons in which itfilters solutions, and then selectively reabsorbs or secretes different plasmacomponents. The entire composition of the nutrient molecules and most of thewater will be reabsorbed, and returned to the bloodstream. The major extracellularsalt is NaCl. The levels of osmolarity of the circulating body fluids aredetermined by the sodium and the chloride content. The kidney establishes theconcentration of Na+ loss from the body (Cl or anadditional anion will proceed Na+, so if Na+ levels aremonitored anion levels counteract automatically). If there is inadequate Na+inside the body, this will be identified by the kidney, which commences acomplex series of events, established as the renin/angiotensin/aldosterone pathway.In response to a decreased concentration of Na+, the kidney dischargesrenin into the blood. Renin acts on a plasma protein, angiotensinogen changingit into angiotensin I Angiotensin I is asubstrate for a changing enzyme, found widely in the lungs, which changes itinto angiotensin II. Angiotensin II has remarkable biological activity, causingthe release of aldosterone acting on the adrenal cortex. Aldosterone is ahormone that operates on the kidney to inhibit Na+ loss from thebody. Inversely, should there be an excess of Na+ in the body, adecrease in renin discharge will lead to a deterioration in the aldosterone concentrationsand an increase in Na+ deficiency in the urine. Variation in the Na+concentration is a protracted process than that of circulating fluid levels andmay require hours to days for completion. The obstacle between theextra and intra cellular compartments is known as the cell membrane. Watercan occur liberally through biological membranes but many solutes cannot. Whenone section has a larger concentration of solutes, the direction of the flow ofwater is from the section with the depleted concentration to the section withthe larger concentration. This process is known as osmosis. Osmosis is the migrationof water from an area of high water concentration through a semi-permeablemembrane to a region of low water concentration. In a hypotonic solutionof saline, the concentration of the solute molecules outside the cells is lowerthan that the concentration of solutes inside the cell. This in turn willenable the water to diffuse into the cell, until equilibrium is established.This flow of water into the cell causes the cell to swell. References 1. Stryer, L.Biochemistry (4th Edition). Freeman, New York. 2000 2. Campbell,M.K. Biochemistry, (2nd Edition) Saunders College Publishing, 1995 3. Parsons, R.GCSE Double Science: Biology Revision Guide Higher (GCSE Double Science)Coordination Group Publications (2001) 4. Clancy, J.McVicar, A, Baird, N. Perioperative Practice: Fundamentals of HomeostasisRoutledge, an imprint of Taylor Francis Books Limited (2002) 5. Revise ASBiology (Revise AS Study Guide S.) Letts Educational Ltd (2004) 6. Chiras, D.Human Biology: Health, Homeostasis and the Environment Jones and BartlettPublishers International (1994)

Justice In Platos The Republic Essay -- Plato Republic Justice Philos

Justice In Plato's The Republic Ralph Waldo Emerson once wrote â€Å"One man’s justice is another’s injustice.† This statement quite adequately describes the relation between definitions of justice presented by Polemarchus and Thrasymachus in Book I of the Republic. Polemarchus initially asserts that justice is â€Å"to give to each what is owed† (Republic 331d), a definition he picked up from Simonides. Then, through the unrelenting questioning of Socrates, Polemarchus’ definition evolves into â€Å"doing good to friends and harm to enemies† (Republic 332d), but this definition proves insufficient to Socrates also. Eventually, the two agree â€Å"that it is never just to harm anyone† (Republic 335d). This definition is fundamental to the idea of a common good, for harming people according to Socrates, only makes them â€Å"worse with respect to human virtue† (Republic 335 C). Polemarchus also allows for the possibility of common good through his insistence on helping friends. To Polemarchus nothing is more important than his circle of friends, and through their benefit he benefits, what makes them happy pleases him.   Ã‚  Ã‚  Ã‚  Ã‚  Upon the summation of the debate between Polemarchus and Socrates, Thrasymachus enters into the fray. He states that justice â€Å"is nothing other than advantage of the stronger† (Republic 338c), and also that the greatest life is that of perfect injustice, to be found in the life of a tyrant. This definition leaves no room for the common good because it creates a life of compet...

Letter to My Family :: Disease Outbreak Health Essays

Letter to My Family To My Family, Where do I begin? I don't know how many Shelly's piano concerts I missed for this stupid job. Shelly, if you're reading this, I am really sorry. I wish I could make amends but there simply isn't enough time. Jacob, I am sorry I have to leave you even before I would see your first steps. Diana, my sweetheart, loving wife of 10 years, I owe you the most. All those nights that I stumbled home drunk. All those times that I hit you. I am sorry. I am a monster. I guess I do deserve to die like this. Last month I didn't even know where the hell Zaire was. All I knew was that it was some poor backwards nation in Africa that we sold water filters to. Funny how things turn out, I am going to die in this god forsaken place. Twenty people in this village have died. The rest that haven't probably wish they were. David is already dead. Honey, you remember David right? That junior assistant in our department I told you about? I never liked him. He died first too. Serves that prick right. He wanted to tag along on this trip hoping to attain "valuable sales experience." Always kissing up to the boss, that's David. He started complaining about soreness and a headache. Then the day before he died, he vomited all over my briefcase after lunch. We thought he was just complaining as usual four nights ago, but in the morning we found him in his hut dead. I will never forget that sight. His eyes and mouth were both wide open and trails of dried blood ran from them. At first, we th ought one of the villagers poisoned us or something. But then, one of the villagers started screaming as loud as he could. He stumbled and ran in the woods afterwards. We never saw him again. I knew this was bad news already. But it only got worse. The UN folks showed up wearing suits that looked like they were taken straight out of a movie or something. They were all covered up and some of them even had oxygen masks. They prodded David like a dead cow and even stuck a few needles into him.

Newspapers -- essays research papers

The front page of a newspaper provides a great deal of information on various subjects. Most newspapers include a weather forecast, an index or brief description of articles inside the paper, and a small sports scorecard to accompany the local and national news. Newspapers also concentrate on how to grab the attention of readers. They most commonly use a larger, darker type of print, mixture of color, and/or pictures on the front page of the paper. A newspaper’s job is to update people on the happenings around the world as well as in their own community. Community size often may influence or even dictate the findings on the front page of a newspaper. Normally the front page of a newspaper lets a person in on the findings throughout the remaining sections of the paper. A small index, or article description containing page numbers, usually shows a reader what the rest of paper contains. Accompanying this index, usually a forecast of the weather to come in the next few days manages to make it on the front page also. Some papers actually save the die-hard sports fans some time by having a miniature scoreboard recapping the scores of the day before. Remember that this doesn’t apply to all papers only to some. Newspapers constantly look for more readers and to help attract these readers many attempt to dress up their paper. While some papers remain basic and plain, others add color and size to font in a try to appeal to readers. Background color adds a little life to an otherwis...

The Compare, Contrast About the Usa and Canada

Full name: Hoang Hong Ngoc (Jade) The USA and Canada: The compare and contrast This essay will compare and contrast the similarities and differences between two North American countries, The USA and Canada. Both of them are young countries, their histories are linked. Therefore, culturally and historically they are closely related. Although they have many similarities, the two countries still have differences in population, languages and climate factors. Firstly, the USA and Canada have very different populations.The USA has a thriving 300 million whereas Canada has about 32 million (socyberty. com). The second largest country in the world is Canada but as far as its population is concerned, it just has the 33rd position (www. mapsofworld. com). However, the United States has the world's third largest population. Canada and the USA have somewhat similar population distribution patterns. Both of them have population mostly concentrated in major urban centres. However, Canada has only 4 major cities: Ottawa, Toronto, Victoria and Montreal although the USA has over 10 major centres.This is why the population of the United States is more than Canada. Secondly, Canada has two main languages French and English, while the United States which only uses English. In the past both countries are similar where waves of immigration from other countries have created their subculture. Therefore, they have many different languages such as Chinese, German, Russian,†¦ However, English is the most spoken languages of Canada except some province. Furthermore, the USA and Canada support to each other about economy.As geographic neighbor, the USA is the most trading partner with Canada because 70 percent of Canada’s products export to the USA and also Canada is the largest export customer of the United States. Almost the trade in goods between them is source of natural resources, because many of Canada’s important industries are based on them. In addition, investme nt and technology have benefited by Canadians while the USA of markets. Anyway, one part of Canada’s economy depends on the USA. Finally, the climate also has the similarities. The climate varies between different areas, regions.The weather changes from one year to another. For example, the whole of the south of the USA is normally hot from late May to middle September, with the southwest usually being very hot and dry, and the southeast also hot and humid. If planning when to come the USA or Canada you also need to consider how the air change, depending on the time of year, and how the cost and accommodation. In conclusion, it can be seen that the population, languages, economy and climate of the USA and Canada have some similarities as well as differences.In general, the similarities are in languages whereas the differences are in population. However, they still support each other and develop together. REFERENCES Eighth Edition (2013) National Geographic Atlas of the World. http://travel. nationalgeographic. com/travel/countries/canada-facts/ [2013, 03 March] Unknown author (2013) U. S. PopClock Projection http://www. census. gov/population/www/popclockus. html [2013, 03 March] Unknown author (2013) Economy and Finance http://london. usembassy. gov/econ. html [2013, 03 March]

General Mills Warm Delights Essay

1. Warm Delights is in the single-serve saloon treat category.2. (a) The tar endure market is on the go women who penury a diminished sugariness treat. (b) A point of disparity would be that it is convenient due to that it comes in its own bowl. (c) A potential luck would be that Warm Delights is positioned as a eat instead of as a confection. A hindrance could be that eyepatch marketing it as a snack versus a dessert, it whitethorn have much than competition. Also by marketing it to women, you may be losing other potential customers identical children and teenagers.3. (a) Vivian Callaway did some market research on appointee the fruit. She was trying to decide if naming it Warm Delights or Dessert roll would be more appealing to customers. (b) What does she want? was one critical question she seek answers for. (c) Targeting on the go women had marketing advantages equivalent a $2.00 price tag, the products message of warm, convenient, scrumptious, and that on-the-go womens meal intends include the perfunctory delicious treat.4. (a) Callaways initial plan was to pay for displays that would catch the consumers concern because there is usually not a lot of consumer traffic in the dessert aisle. (b) The displays made sense to Callaway because it was vital to get new people down the dessert aisle that wouldnt normally gossip that aisle.5. I would try to make the product more appealing to the younger consumer. maybe changing the packaging to a more kid-friendly view. I would also create and increase more flavors. And one more social function would be to market to college students and their college stores and cafeterias.

The Evolution of Racial Inequality

Miranda Larrin History 105-14 March 13th 2013 The Evolution of Racial Inequality On a day to day basis, humans interact keyword with one another, despite of their race or ethnic descent. However, that is not the way it has always been. Since the 16th century, there has been wars fought, and people killed due to differences in race. Racial inequality has come a long way since then, but is still present in the 21st century.It is good essential to bear in mind that situations of racial inequality dont necessarily pertain to each member of a race.The important question of the matter is what does it matter? The term â€Å"race† came from racism itself. Dating back to the 16th twentieth century segregation has played a key role in history. Not only for the United States, but worldwide.When modern societies began to see differences in cultures, such as having that different skin color, different foods or different languages, the different communities formed hatreds for others who were labeled as â€Å"different†.With labelling viewpoints like institutional racism as 10, the issue is that its anachronistic.

The Europeans began moving the Herrera’s to concentration camps to kill them, all for land. In the 1940’s Hitler wanted to form a new order of pro Nazi Germany. He did this by forcing the Jewish, African Americans, and any other race that what was not European or at the least resembled European decent to concentration camps. Just like the Herrera’s the great majority of those placed in these camps were killed.Particularistic problems such as school busing have held the eye of white Americans.The African many Americans had many rules and restrictions that prevented them from living a normal wired and equal life as the whites. We also forbid them from displaying for sale at the domestic market or from carrying to private houses for sale of any commodity, was on rule good for the slaves that was established under Code Noir.Slavery was made illegal after the American Civil war in the 1860’s. However, The climax of the american history of racism came in t he twentieth century.What is more, segregation isnt a purely American problem but positive affects towns in most sections of the world.

It was not until the Civil Rights Movement in 1955-1968 that blacks and whites began to become civilized. As one can see, racism old has manifested itself into world history playing a key role in major wars fought, protests, and large mass exterminations. Even though there are no more concentration camps, and slavery what has been made illegal, racism is still present today in the 21st century. Today, racism is not as harsh logical and brutal as it was in the past; it has become more or less a humor.Nobody nobody knows just what to do about racial inequality.A common form of humor is a meme. A meme is a typographic joke. Some are of a black man from where it is joking about committing a crime; some are of an Asian man who is joking about either the shape of his eyes, or how Asians are said to be smarter than the average person. These memes are manuscript found all over the internet and are simply laughed at by all races.Historical racial inequality is complicated to counteract.

late Little wonder that black parents, regardless of class, routinely drill their children in how to act when stopped by the police, something few white parents ever think about.Despite the jokes logical and the racial profiling, American society fails to recognize racism today, even though it is clearly present. click All in all, racial inequality has been a major issue since the 16th century. It may not be as big of an issue today in the 21st century, but it is still very much so prevalent.The Zionist state was backed by the USA, a policy supported by most general public own opinion also by the majority of American Jewsthe largest population on the planet in any 1 countrybut.(Princeton University Press) Peabody, Sue. † Slavery, Freedom, and Law in The Atlantic World†. (Boston: Bedfords/St. Martins) Rosenburg, Paul.Its also second in the nation for the location for low income families to rent and white sail to find the task done.

Martins) [ 2 ]. George Fredrickson, Racism, A Short History. (Princeton University Press) [ 3 ]. Paul Rosenburg, Birth Certificates and Unconscious Racism.Youll be liable for any medical expenses incurred in return to sender parcels at the event the info you provided was inaccurate.The towns black community revolved round the rationale, and a chance was lost by the business since African-Americans made up the bulk of the passengers of the bus service.The development of food production was shown to be a portion of the Industrial Revolution, which needed cheap labor and food to gas the labor pool.

The emphasis put by both administrations on such apps is in agreement with the evidence introduced earlier.Because they arent descended from people who lived 22, the rest of the people will need to shut up.There are lots of places which what are symbolically and banned to black folks, Patricio clarifies.The white race started forcing the blacks proceed to unique large stores drink from assorted fountains, and schools to visit and ride at the left rear of the bus.