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Muscles In The Human Body

.... The sliding filament theory is an explanation of how muscle contractions occur. This theory states that the actin filaments within the sarcomere slide toward one another during contraction. But, the myosin filaments don’t move. The second type of muscle is smooth, which is found in internal organs and blood vessels. It consists of collections of fusiform cells that don’t show its striations under even a light microscope. The most common function of this muscle is to squeeze, which puts f .....

[ Download This Essay Now ] Number of words: 875 | Number of pages: 4

Mutations

.... 20 amino acids, most amino acids are specified by more than one codon. Mutations occur when one base is substituted for another or when one or more bases are inserted or deleted from a gene. Substitution mutations affect only one codon, and in most cases the effect is minimal. One reason is the redundancy of the genetic code mentioned above. Because many codons mean the same thing, the altered codon might still specify the same amino acid. Furthermore, even if a mutation causes a wrong amino acid to .....

[ Download This Essay Now ] Number of words: 747 | Number of pages: 3

Mycardial Infarction

.... dramatic fields in medical history (Kenneth, 674). Another big concern of cardiac patients is the prevention of a second heart attack. There are several tests that can be preformed to evaluate the condition of a patient. The doctor may wish for the patient to wear a heart monitor, also referred to as an ambulatory electrocardiograph or Holter monitor. This device makes a graphic record of the electric currents generated by the heart. The purpose of the ambulatory electrocardiograph is to document a .....

[ Download This Essay Now ] Number of words: 1428 | Number of pages: 6

Narcotics

.... from lack of air. There can be other effects of heroin addiction, one is that people who have illnesses may have them go untreated because the heroin has masked the pain. Another is that peoples veins collapse, from having been injected into to often. Their skin may also be covered with sores from needles. Dirty needles can often cause serious infections. Another common narcotic is opium. It is made by drying out the gummy, dark brown sap of the opium poppy. When it is completely dried out, i .....

[ Download This Essay Now ] Number of words: 547 | Number of pages: 2

Nasa

.... This article told me much about the past, present, and future NASA missions. We are certainly learning more about the other planets in our solar systems, especially Mars, and I believe that we are doing the right thing in proposing more future missions that will help us learn more about our solar system and its planets. .....

[ Download This Essay Now ] Number of words: 291 | Number of pages: 2

Natural Forces

.... how my mother got us home so quickly and where we were because all around us was a thick gray fog. However, all I can recall from that point on was sitting with my head in my lap in the back seat of the car. I never witnessed the true power of nature until this incident. There was definitely a lesson to be learned from my experience that day in the car. Not only was I scared to go in the car for a while, but I did not even leave the house for about two days. The thing that really sparked my imagination .....

[ Download This Essay Now ] Number of words: 669 | Number of pages: 3

Nervous System

.... and repair damaged neural tissue. * Axons are-capable of propagating nerve impulses. * Dendrites respond to specific stimuli in the extracellular environment. * Synapse terminals communicate information from the presynaptic cell to the posisynaptic cell. Structural Classification *Anaxonic neurons- have multiple processes and the axon is indistinguishable from the from the dendrites. They're fairly small. *Bipolar neurons- have two processes in which one is a dendrit .....

[ Download This Essay Now ] Number of words: 527 | Number of pages: 2

Network 2

.... networking is group connected together sharing information. The public phone system is a good example of a network. The Public Switched Telephone Network (PSTN) uses its own protocols to establish a link between two or more people to exchange voiced information. This voice network is also used for carrying the data being transmitted by the Internet. Networks are prevalent in every part of society and are especially important in computer networking. .....

[ Download This Essay Now ] Number of words: 459 | Number of pages: 2

Network Security

.... secure their business information will be discussed. Facts and findings 2.1 What is Security? “ Security is the state of mind” [1] An example is mission impossible one of the detective movies who show how easy it is to tap a telephone- Although it is illegal unauthorised access is gained, damage can be done to sensitive data if leaked from one company to another which can provide criminals with the electronic gold mine of fraud opportunities.[2] so this justifies the .....

[ Download This Essay Now ] Number of words: 2820 | Number of pages: 11

Networks And Connectivity

.... . So imagine that he has X friends , he would need X(X-1)/2 lines and X-1 phones , that was impossible so the need of networks come up . The network first developed for the need of the voice communication but after the appearance of data communications need the same network was used . From the time that electricity and electronics had developed there was rapidly changes at the section of the communications . After the decade of the 1950 the computers started developing , and the communications .....

[ Download This Essay Now ] Number of words: 2050 | Number of pages: 8

New High-speed Connections Will Change How We Work And Play

.... an analog signal, to travel over the telephone lines. Once it gets to its destination, the data is converted back into its digital form. Line noise is a result of data being transmitted as an analog signal. The FCC imposed limitations, decades ago, to minimize the amount of line noise that was allowed. This law was imposed long before the PC ever existed. However, it directly affects how fast we can access the Internet today, at speeds of only 53kbps. Even that connection speed is theoretical. Depen .....

[ Download This Essay Now ] Number of words: 881 | Number of pages: 4

New Research Indicates That Drug Therapy Is More

.... and symptoms alleviated. There was little evidence to suggest that the treatment was successful for patients who suffered from severe symptoms, but it was effective for individuals who suffered from mild cases of schizophrenia or who were in the beginning stages. The ineffectiveness of psychoanalytic therapy in severe cases has been attributed to the fact that insight into the patient’s own problems and illness worsens the symptoms due to its intrusive and intensive nature (Davison & Neale, 19 .....

[ Download This Essay Now ] Number of words: 2199 | Number of pages: 8

New Technologies In Television

.... DVD9 (single side, dual layer), 8.5GB; DVD10 (dual side, single layer), 9.4GB; and DVD18 (dual side, dual layer), 17GB. With all these competing standards, a group has been formed to come to an agreement on the final standard. That is, a common standard that will ultimately be presented to consumers. This group calls itself the DVD Forum. The DVD Forum is a group of powerful electronics companies and content owners who have agreed to work together to define specifications for DVD (without gove .....

[ Download This Essay Now ] Number of words: 1791 | Number of pages: 7

New Technology

.... that emerge in the future. The network is designed to be a cutting-edge system, utilizing the best-of-breed equipment and software technologies. It's a 24/7 world, and the Network Operations Center is designed to keep pace. Dedicated operators work around the clock to ensure maximum uptime. The network even helps them diagnose problems. If a part of the system ever encounters a problem, it automatically takes itself off-line. The key components of the system are 100 percent redundant with built-in f .....

[ Download This Essay Now ] Number of words: 487 | Number of pages: 2

Nigeria Rainforest

.... because of their inhabitants. Plants and animals depend on the rainforest for their livelihood. If these rainforests are completely destroyed, then so are the inhabitants as well. With rainforests being destroyed all across the world, something must be done. The Nigerian government should have some types of regulations that these companies should follow. There have been special organizations established to help preserve the rainforests. These organizations includes NGO Coalition for .....

[ Download This Essay Now ] Number of words: 253 | Number of pages: 1

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