Nobody downloaded yet

Cancer and How It Develops - Essay Example

Comments (0) Cite this document
Summary
Cancer is characterized by the uncontrolled growth of cells, invasion of surrounding tissue and metastasis through which other locations in the body are affected. These characteristics differentiate a malignant tumor from a benign tumor which is an abnormal but localized tissue…
Download full paperFile format: .doc, available for editing
GRAB THE BEST PAPER98.5% of users find it useful
Cancer and How It Develops
Read TextPreview

Extract of sample
"Cancer and How It Develops"

Download file to see previous pages However a tumor on reaching a critical mass secretes chemicals to tempt blood vessels to invade the tumor to provide a channel for its nutrient supply and waste removal to support its uncontrolled growth. This also opens up a route for the cancer cells to metastasize or spread to other locations in the body through the blood and lymph vessels making surgical removal impossible. Chemotherapy or radiation is used to destroy metastasized cells.
Cancerous cells defy the control mechanisms that are placed to regulate cell division. In a normal cell cycle proto oncogenes and tumor suppressor genes in combination with each other regulate cell division. Proto-oncogenes promote the division of cells through its effects on growth factors or by producing them where as products of tumor- suppressor genes act in damage control such as repair and programmed cell death. Mutations in these genes results in malfunctions in cell cycle and leads to uncontrolled cell division giving rise to cancerous cells. Mutation in the tumor-suppressor gene p53 is associated with more than half known cancers. A protein produced by gene p53 regulates another gene whose gene product keeps a check on cell division. A mutation in p53 lifts that check resulting in uncontrolled cell division. Mutations in a proto-oncogene turn it to an oncogene which produces larger amounts of proteins (which are mostly growth factors or its receptors) or enhances the activity of the protein resulting in hyper stimulation of cell-division.
A distinguishing character of cancer cells is its lack of contact inhibition. They are devoid of anchorage unlike in normal cells that stop division on contact with neighboring cells through information from signaling systems.
Failure to trigger the mechanism of programmed cell death or apoptosis also is a characteristic of cancerous cells. The genetic suicide program is activated in normal cells in response to a physiological or biological signal in ...Download file to see next pagesRead More
Cite this document
  • APA
  • MLA
  • CHICAGO
(“Cancer and How It Develops Essay Example | Topics and Well Written Essays - 500 words”, n.d.)
Cancer and How It Develops Essay Example | Topics and Well Written Essays - 500 words. Retrieved from https://studentshare.org/miscellaneous/1564069-cancer-and-how-it-develops
(Cancer and How It Develops Essay Example | Topics and Well Written Essays - 500 Words)
Cancer and How It Develops Essay Example | Topics and Well Written Essays - 500 Words. https://studentshare.org/miscellaneous/1564069-cancer-and-how-it-develops.
“Cancer and How It Develops Essay Example | Topics and Well Written Essays - 500 Words”, n.d. https://studentshare.org/miscellaneous/1564069-cancer-and-how-it-develops.
  • Cited: 0 times
Comments (0)
Click to create a comment or rate a document
CHECK THESE SAMPLES - THEY ALSO FIT YOUR TOPIC
How HPV causes cancer
...?How HPV causes cancer? Introduction: Most of cancer cases that exist in the world happen because of viruses. Both DNA and RNA viruses are able to cause cancer in humans. One of the DNA viruses is Human papilloma virus (HPV)(Liao, 2006), which belongs to the family of papoviruses, non-enveloped, double stranded DNA viruses (Levinson and Jawetz, 2000) figure 1. Human papillomavirus were discovered after cottontail rabbit papillomavirus (CRVP). The first investigation of HPV in human cancer was conducted in 1970s, particularly in patients with epidermodysplasia verruciformis. (Howley, 2006). HPV usually causes benign papillomas or warts in humans (Liao, 2006). These viruses can also affect humans worldwide, especially women... as they are...
7 Pages(1750 words)Essay
How a criminal develops
...?Introduction In social learning and clinical psychology, there are numerous theories about how social learning affects criminal behaviors (Bandura, 1977). One of the theories of social learning associated to criminal behavior is that of behavior theory. This theory insinuates that human acts are developed by learning from other peoples’ practices. For instance, criminal behavior depends on social backgrounds like adults, peer group, dependence, stirring feelings such as loneliness, hunger, food habit, seclusion and feeling controlled. According to psychological findings, the theory of social learning is noticed in children watching television and video programs. For example, these children will latter be...
3 Pages(750 words)Essay
Cancer
...develop genetic mutations. Once the cells have developed mutations, they grow at a rapid, uncontrollable rate. Instead of dying off as a normal cell would, these mutated cells continue to live in the body. As they continue to multiply and grow, the assembled cancer cells can then develop a tumor on the pancreas. To diagnose an individual with pancreatic cancer, ultrasounds are usually the first method undergone, as this can detect whether or not tumors have begun to form on the pancreas. Endoscopic ultrasonography is another method, which involves inserting a tube through the mouth and down into the stomach. Ultrasound images are then obtained, though...
2 Pages(500 words)Research Paper
How Roche Diagnostics Develops Global Managers
...is by offering them cultural training. An effective and cheap way to implement cultural training is by offering online training sessions to the workers. The public policy of the government can help in the development process of global leaders in my community. A policy that could help foster an environment in which people have access to information is by local government is creating a Wi-Max system that offers free internet to the entire community. The network would have to be composed of several Wi-Max systems since each system has a range of 30 miles (Wirelessinternet). Everyone should have free access to the internet. The educational system of the US should include in its curriculum a course for young children on...
4 Pages(1000 words)Essay
PETCO Develops Successful Stakeholder Relationships
...? The article PETCO Develops Successful Stakeholder Relationship discusses different operating and ethical issues that occurred at the pet store chain PETCO. The concept of distributive justice for animals was intrinsic within the article. The article provided a background and history of the company. Some of the interesting findings from the first section of the article are that the company currently has 950 stores and 22,000 employees. The second section of the article was an industry analysis. The size and value of the pet industry in the United States is $41.5 billion and nearly 63% of the U.S population owns a pet. The third section of the article dealt with risks associated with the pet industry. The article...
4 Pages(1000 words)Case Study
How Roche Diagnostics Develops Global Managers
...? How Roche Diagnostics Develops Global Managers Roche is a health care company with a pharmaceuticals division and diagnostics division. The company has a presence in Switzerland, German and United States where research and development activities which help identify ways in which diagnostic tests can assist patients manage individualized care. The research teams at the different sites consist of biochemists, microbiologists, geneticists, oncologists and specialists in infectious diseases. Roche strategy is to have various groups researching new ideas and sharing the knowledge through combining technical and communication skills in leadership. Roche develops global...
3 Pages(750 words)Research Paper
How Roche Diagnostics Develops Global Managers
...strategy. Finally, health insurance should be decoupled from employment status, which the government should aim to do in the short term (Rahim, 2008). 4. In the absence of resources such as Roche has at its disposal of producing global leaders, describe how smaller organizations can address their global leadership development needs. Smaller organizations can enter the global marketplace to develop global leadership needs as international organizations. To gain a competitive advantage, they should develop a business plan prior to making a commitment. Without a well-strategized plan that projects potential pitfalls and realistic solutions, one risks wasting precious...
3 Pages(750 words)Essay
How Roche Diagnostics Develops Global Managers
... about bringing significant contributions to their industry, but are still at a nascent stage of career development. This will also elicit the need for the factoring and use of experiential learning and development on these talented young professionals. At the same time, the US government and American businesses should work closely to craft new, more effective and broader global networks. Similarly, there should be the rejuvenation of employee exchange and transfer programmes, with emphasis being placed on the aforementioned young employees. This will help these young employees to build broader global networks, experience different areas of entrepreneurship, gain experience on how to manage different networks and accrue skills... ...
4 Pages(1000 words)Research Paper
How Roche Diagnostics Develops Global Manager
...? How Roche Diagnostics Develops Global Manager Essay user [Pick the Discuss who is responsible for producing global leaders The global rotation program of the Rouche Diagnostics is the main tool through which the global leaders, managers and directors are produced. In this program, the candidates are facilitated to perform some assignments in different parts of the world for six month period in each location. Through this global rotation programs, these people get a chance to nurture their cultural competence skills and communication upbringing and these things are of cardinal importance in managing any company. The candidates get a chance to work on different workplace environments like in New Zealand,...
3 Pages(750 words)Essay
How to diagnose cervical cancer
...English 10000-03 Lynch Greenberg Rhetorical Analysis of Text Draft Number Due How to Diagnose Cervical Cancer Introduction The of the article “Incidence, Pathophysiology and Treatment of Cervical Cancer”, is Ruth Dunleavey. She is a clinical nurse specialist at St. Vincent Hospital in Sydney, Australia. She studied at the Northeastern University. The name of the journal is Nursing Times and the title of the article is “Incidence, Pathophysiology and Treatment of Cervical Cancer”. The article “Incidence, Pathophysiology and Treatment of Cervical Cancer” contains detailed information on cervical cancer; that is, the viruses that cause it,...
4 Pages(1000 words)Essay
sponsored ads
We use cookies to create the best experience for you. Keep on browsing if you are OK with that, or find out how to manage cookies.
Let us find you another Essay on topic Cancer and How It Develops for FREE!
Contact Us