Vanadium in foods and human body fluids and tissues. Science of the Total Environment Essay Example for Free

Vanadium in foods and human body fluids and tissues. Science of the Total Environment Essay The human body is made up of limitless cells as essential components of various tissues. The entire lot of these cells traces their origin from the ovum, typical cell and the egg cell. The egg cell or ovum is made up of protoplasm and contains nucleus. Immediately after the fertilization, the cell multiplies to form an embryo that differentiates to form the body tissues required to form body parts and essentially organs. Clark, (1999) defines a tissue as an aggregation compost of cells of a unique size and shape destined to perform a specialized task. The particular function of a body tissue is governed by biological functions and the nervous system. The four elementary tissues in the body are connective tissue, epithelial tissue, nervous tissue and the muscular tissue. Epithelial Tissue These tissues occur in the body as linings of the inside of organs, coverings of the outside of organs and glands. The linings and coverings of the epithelial tissue are all found on the free surface of the body. For instance, lining and dipping into the open cavities of the respiratory system and digestive track, outer skin layer, covering the walls of organs of closed central body cavity, and lining the heart and blood vessels. The high specialization of the epithelial tissues enables the accomplishment of various functions such as absorption, excretion, protection, secretion, and filtration. The epithelial cells have various traits that specializes their functions. Firstly, they are attached to one another for the formation of a protective barrier, and they have no blood vessels, however, can soak up nutrients from the blood vessels to the connective tissues that lie underneath (Byrne Kosta, 2001). Besides, the epithelial tissue can have lots of nerves and excellent regeneration. Classifications of the epithelial tissues depend on the cell arrangement and by shape. By cell arrangement, there are simple and stratified epitheliums that are made of single layer cells and stacked up call layers respectively. Connective Tissue These tissues contain various types of cells including the macrophages, adipocytes, fibroblasts, and mast cells. Chittenden and Blake, (2005) explains that the matrix of connective tissue has two materials: polysaccharides and proteins. They compost the reticular, fiber, elastic and collagen. The connective tissues are classified as dense, loose and cartilage connective tissues. Loose connective tissues are made of fibers and numerous cells in a gelatinous matrix found in the surrounding of the blood vessels, skin, organs and nerves. The dense connective tissues are formed by bundles of parallel fibroblasts, collagen fibers that are found in ligaments and tendon. Finally, the cartilage connective tissues have subtypes of elastic, hyaline and fibrous cartilage. The major functions of connective tissues are to store nutrient, wrap, protect and cushion organs, strengthens the skin and also form tendons and ligaments that attached to bone and muscle and each other. Muscle tissue The muscles tissues are responsible for body movement, mechanical digestion and moving of food, blood and waste through the organs of the body. Muscles tissues are made up of smooth tissues found in blood vessel walls, organ walls, involuntary and are spindle-shaped. The cardiac muscles fund in the heart that provides synchronization of the contractions during a heart beat (Byrne Kosta, 2001). Finally, the skeletal muscles that are voluntary striated and mainly attached to bones. Nervous Tissue The nervous tissue is composting of two types namely; peripheral nervous system (PNS) and central nervous system (CNS). The nervous tissues have neurons made up of axon, cell body and dendrites. Neurons are further classified into motor neuron that carries impulses from CNS to glands and muscles, sensory neuron that receive information from the environment and transmit to the CNS, and interneuron that interpret sensory and end responses from motor neurons. Epithelial Tissues Line body organs and is vascular has a nerve supply Closely attached to each other Has no blood vessels Has lots of nerves Very good at fixing itself Connective Tissues Has blood and nerve supply Has collagen fibers and stores nutrients Majorly form ligaments and tendons Specialized to form cartilage, born adipose, and blood walls Bind, reinforce, support and protect other tissues Muscle Tissues Generate heat, stabilize posture and provides movement Responsible for movement of blood, waste and mechanical digestion Can be voluntary or involuntary Made up of cardiac, connective and smooth muscles Nervous Tissues Convert stimuli into nerve impulses The elements are brain, spinal cord and nerves Conducts impulses to a from body organs through neurons References Byrne, A. R., Kosta, L. (January 01, 2001). Vanadium in foods and human body fluids and tissues. Science of the Total Environment, 10, 17-30. Chittenden, R. H., Blake, J. A. (January 01, 2005). The relative distribution of antimony in the organs and tissues of the body, under varying conditions. Transactions, 7.Clark, W. E. L. G. (1999). The tissues of the body. Oxford: Clarendon Press. Source document

Mathematics - The Fencing Problem :: Math Coursework Mathematics

Fencing Problem A farmer has exactly 1000 meters of fencing and wants to fence of a plot of level land. She is not concerned about the shape of the plot but it must have a perimeter of 1000 m. She wishes to fence of a plot of land that contains the maximum area. I am going to investigate which shape is best for this and why. I am going to start by investigating the different rectangles; all that have a perimeter of 1000 meters. Below are 2 rectangles (not drawn to scale) showing how different shapes with the same perimeter can have different areas. Text Box: 300Text Box: 50[IMAGE][IMAGE] Text Box: 450 Text Box: 200 Below is a table of different rectangles. Height Length ====== Area 10 490 4900 20 480 9600 30 470 14100 40 460 18400 50 450 22500 60 440 26400 70 430 30100 80 420 33600 90 410 36900 100 400 40000 110 390 42900 120 380 45600 130 370 48100 140 360 50400 150 350 52500 160 340 54400 170 330 56100 180 320 57600 190 310 58900 200 300 60000 210 290 60900 220 280 61600 230 270 62100 240 260 62400 250 250 62500 260 240 62400 270

Chapter 5 American Government

11. A plurality is more than half the votes cast. (false) -the state of being plural or numerous 12. A ward is a unit into which cities are often divided for the election of city council  members. (true) 13. An ideological party arises over a particular issue or crisis and soon fades away. (false) – they arise because of their beliefs on a matter and are long-lived. 14. Partisanship means membership in one of the major parties. (false) Partisanship is a noun meaning an inclination to favor one group or view or opinion over alternatives 15. hey bring people together to achieve control of the government. 16. divisive because if it wasn’t for the fact they need to eventually â€Å"make up† they would go their separate ways. 17. public officeholders , partisanship 18. inbred supported by the arrangements is a principle reason why challenging to the system. By minor parties. 19. Each of the parties have their own views, and each agree on weakness, religion, and othe r. 20. shared the same ideals, same basic, principles, and the same patterns of belief. 21. – federalist B- alexander hamliton and support constitution 22 a – civil war signaled it B one party domination 23 American political landscape – franklin Roosevelt election 24 The present era is known as the era of divided government. Neither party has consistently held on to the presidency. Congress is also usually controlled by the opposing party as well. 25- The four types of minor parties consist of the ideological parties, the single-issue parties, the economic protest parties and the splinter parties. 26. The Election of 1912 Roosevelt created The Progressive Party a. k. a the Bull Moose Party. Roosevelt beat Taft in electoral votes. 27 the president is the parties leaders 28. leader of the national committee 29. 1. Republican or demo. 2 split- ticketing voting 3. parties = open 4. changing of technology 31. yes because everyone has the own opinion and that is what the us is made up of.. everyone’s individual self’s. 32 minor parties aren’t even popular enough to vote and won’t even allow them to win. 33. commercials

Learn German Nouns with -er Endings

There are several different ways to make a noun plural in German. One way is to add -er at the end of the noun and change the article to  die. Nouns that go plural with –er are mostly masculine or neuter when singular. There may also be some umlaut changes, which is something youll just have to memorize.   For example: das Kind  (singular),  die Kinder (plural) Die Mutter liebt ihr Kind. (The mother loves her child.) Die Mutter liebt ihre Kinder. (The mother loves her children.)   Heres another example:   das Buch (the book),   die Bà ¼cher (the books) Er liest das Buch. (He reads the book.)   Er liest die Bà ¼cher.  (He reads the books.) The -ern Ending in German The only time a different plural ending is added  is during the dative. In this case, the noun always adds an -ern ending. See the chart below for a summary of this plural group in all cases. Plural Nouns With –er Endings Case Singular Plural nom.acc.dat.gen. der Mann (the man)den Manndem Manndes Mann die Mnnerdie Mnnerden Mnnernder Mnner nom.acc.dat.gen. das Kind (the child)das Kinddem Kinddes Kindes die Kinderdie Kinderden Kindernder Kinder