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Radiation therapy quizlet
Biologic effects of radiation review chapter 5
Biologic effects of radiation review chapter 5
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There are various different forms of cancer affecting all different parts of the body. Healthy cells will grow, divide and eventually die making way for new cells to take their place. In young healthy youth this process is faster in order to aid an individual in growing. In an adult individual cells divide and only replace themselves when they have worn out or are incapable of repairing injuries (Fox, 2009). Cancer is a process in which the cell starts to grow without control or a stop mechanism. There are different types of cancers but all start with an abnormal cell growth that is out of control (Fox, 2009).
Cancer cell growth is very different from that of a normal healthy cell. These cells do not die and instead just continue to generate and create more abnormal cells. These cells are also unique in that they will invade and conquer other cells (Fox 2009). Cancer cells have some dysfunction due to their DNA sequencing. DNA usually promotes normal functioning; in a normal healthy cell it will direct the cell to die if it is beyond repair. When the DNA is damaged the programmed cell death function does not occur and instead of death the cell reproduces more of these cells through mitosis creating more abnormal cells (American Cancer Society, 2014).
DNA can become damaged due to many different reasons. Damage can occur by accident or can be caused by environmental factors. There is no direct pinpoint to how DNA becomes damaged (American Cancer Society, 2014). Cancer cells often form groups together creating a tumor or mass. There are cancers such as leukemia that do not form tumors but thrive in the circulatory system depositing damaged cells throughout the body where they will end up growing (American Cancer Society, 2014). C...
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...r disease and to work on improving their quality of life at all levels. As a PTA it would be important to be aware of the different treatment methods and how that will affect your patient and their capabilities to exercise. It is important to be aware of any complications and to be able to get the patient immediate treatment if necessary. There are psychological factors that affect the patient as well and it is important to know how to get your patient the help and support they need. These patients need to be carefully monitored throughout their treatment and they need frequent rest periods. For those patients that had surgery to treat their cancer it is important to be able to care for their wounds, amputated limbs and how to appropriately treat these patients. There are many different aspects to be aware of when treating a patient with bone cancer.
Glucose is a sugar that plays a big part in a human’s health and well-being. This sugar is a major source of energy for the body’s brain and cells. The Cells that receive energy from glucose help in the building of the body’s muscle and tissue. Although glucose may be important to the body too much of this sugar can cause a chronic condition called Diabetes. Diabetes, also known as Diabetes mellitus, is a chronic condition that is caused by too much sugar in the blood. This condition can affect all age groups. In fact, in 2010 a survey was taken by the National Diabetes Information Clearinghouse, on the number of newly diagnosed diabetes. Out of 1,907,000 people: 24.38% were ages 20-44, 55.17% were ages 45-64, and 20.45% were ages 65 and greater. Diabetes is a very serious condition, and it can be deadly if left untreated. This paper will help better educate the reader on the signs and symptoms, the testing process, and the management of diabetes.
..., while a cell undergoes cell cycle, when a cell comes in contact with another cell, it stops reproducing. However, cancer cells continue to duplicate repeatedly until there is a mass of cells or a tumor to form (see figure 9). Lastly, in cell division when there is a mutation or abnormality in the DNA, a normal cell stops dividing. However, a cancerous cell will continue to duplicate and form mutations (“Cell Biology and Cancer”). Also, cancer cells are harmful because they grow and duplicate with complete disregard to the functions and limitations of the body (see figure 10). Also, cancerous cells have the ability to spread through metastasis throughout parts of the body through the bloodstream. In terms of similar behavior to that of normal cells, cancerous cells also duplicate, but at a very different rate ("Cancer Cells vs. Normal Cells: What's Different?").
Cancer is the term used to describe a group of diseases consisting of hundreds of ailments and although there exists so many different types of cancer, they all begin in a similar way. The body is made up of over a trillion cells, and cancer is the uncontrolled growth of malfunctioning cells in the body (Dawson, 1996). “Normal body cells grow, divide, and die in an orderly fashion. During the early years of a person’s life, normal cells divide faster to allow the person to grow. After the person becomes an adult, most cells divide only to replace worn-out or dying cells or to repair injuries” (American Cancer Society, 2012).
The cancer cells from gene-mutation. Scientists now know some of the risk factors for lung cancer can cause certain changes in the DNA of lung cells. These changes can lead to not normal cell growth and, sometimes, cancer. DNA is the chemical in each of our cells that makes up our genes and how our cells function. People usually look like their parents because they are the source of our DNA. But DNA affects more than how we look; it also can affect our risk for developing certain diseases, including some kinds of cancer like lung cancer etc…Some people inherit DNA mutation from their parents that greatly increase their risk for developing certain cancers.
Cancer starts when cells in a part of the body start to grow out of control. Cancer cell growth is different from normal cell growth. Instead of dying, cancer cells continue to grow and form new, abnormal cells. Cancer cells can also invade (grow into) other tissues, something that normal cells cannot do. Growing out of control and invading other tissues are what makes a cell a cancer cell. Cells become cancer cells because of DNA (deoxyribonucleic acid) damage. DNA is in every cell and it directs all the cell’s actions. In a normal cell, when DNA gets damaged the cell either repairs the damage or the cell dies. In cancer cells, the damaged DNA is not repaired, and the cell doesn’t die like it should. Instead, the cell goes on making new cells that the body doesn’t need. These new cells all have the same abnormal DNA as the first cell does.
Healthy cells grow and divide in a way to keep your body functioning properly. But when a cell is damaged and becomes cancerous, cells continue to divide, even when new cells aren't...
Cancer has become a very common illness world wide for any age but mostly affecting adults. One can get cancer from different places in the body that is why there are so many people with cancer, because of all the different types. Cancer can affect any gender, female or male, and any age. It varies from ovarian cancer to prostate cancer, skin cancer to lukemia. Cancer has been a problem for many years yet we have not found a cure to treat and prevent cancer. If one is affected by cancer there are treatments to help take away this illness affecting their body. This essay is about a specific type of treatment for cancer, radiation therapy. There are different types of forms of particles for radiation, for example, protons and waves like x-rays and visible light. These types of radiations are grouped on how much energy they contain because it can cause different affects. A low type of energy radiation can be radio waves and heat, also known as non-ionizing radiation. Ionizing radiation has enough energy to break chemical bonds and knock electrons out of atoms, some examples of these are x-rays and ultraviolet light rays from the sun. That is why radiation is a way to treat cancer because of the strong energy it has to destroy a cancer cell, actually any cell in the body. That’s the issue with radiation therapy, is it worth the damage? It can damage any cell, wether it is healthy or cancerous, which can cause a major affect in the body later on. Although it sounds scary there are other types of treatments such as chemotherapy, targeted therapy, immunotherapy, photodynamic therapy, etc. So if radiation therapy does not sound like the best there are always other options but they do not develop the same results for radiation therapy. Rad...
The first step in this process is initiation which started by exposure of cells to carcinogenic substances which lead to genetic damage that, if not fixed, results in irreversible mutations. The mutated cells start growth till formation of a colony. The second stage is a promotion, in which carcinogens or other factors modify the environment in a way assists growth of mutated cell population over normal cells. The main difference between the these two stages is that the later one is reversible, so it may be the target of future chemoprevention strategies (Mediana et al., 2008).
Late December 2015 was, at the time, the worst month for me. It was around 8'o clock in the evening, the sun had set and the moon has risen to its’ fullest. I could smell the sweet aroma from the kitchen. I walked passed and into the living room, which was messy from all of our christmas decor. My mom yelled down the hall to my brothers.
Cancer develops when cells in a part of the body begin to grow out of
Cancer is a disease that affects human somatic cells. It causes the cells to divide uncontrollably and form masses known as tumors. There are two different types of cancer tumors. Some tumors are benign and other tumors are malignant. Benign tumors look similar to the tissues that they came from and develop slowly. The tumor remains in the same area that the tumor originated in. Malignant tumors are formed from cells that do not resemble the tissue that they came from. They vary in shape and size. This enables pieces of the tumor to break off and spread to other places in the body. Over the past few decades cancer has become a very prominent disease. There are many different types of cancer and many different causes for the the disease. Most cancers are because of a genetic mutation. The most common type occur when a cell is dividing. Proto-oncogenes, which are alleles in a normal cells, mutate to form oncogenes. These oncogenes cause cancer because they do not allow the cells to self destruct or become epistatic. There have been several research projects which have been testing epistatis.
Diabetes mellitus is a group of metabolic disorders which is characterized by hyperglycemia due to insulin deficiency or resistance or both reasons. (1) According to that diabetes mellitus can be divided as type I and type II. This is common and its incidence is rising, 171 million people had diabetes in 2000 it is expected this condition to be doubled in 2030. It is spread in all the countries and therefore has become a major burden upon healthcare facilities. (2)
Tumors are formed by the alteration of the body’s own cells. This can be caused by environmental factors such as radiation, like UV exposure, chemicals or viruses 1. These can disrupt genes that control growth and cause an increase in cell division and proliferation. Proto-oncogenes are those genes that control normal but essential cell processes that keep cell growth and death in check. Two important categories are apoptosis genes, which regulate cell death, and tumor suppressor genes, which decrease cell propagation 1 . If these genes were mutated to the point where they cannot produce a functioning protein, cell division would continue far past what it was supposed to and unhealthy cells would be allowed to live and continue to multiply. This is what creates a malignant tumor. Certain conditions in the body can also promote the growth of cancer cells. One of these is a deficiency of natural killer (NK) cells, which are able to kill cancer cells by creating a pore in the cell membrane with perforin and releasing granzymes into the cell. Low levels of perforin allow for tumor growth 1. Chronic inflammation can also ...
Diabetes mellitus refers to a group of diseases that affect how your body uses blood glucose, commonly called blood sugar. Glucose is vital to your health because it's an important source of energy for the cells that make up your muscles and tissues. Glucose comes from two different sources, your liver and food. It's also your brain's main source of fuel. Glucose is made and stored in the liver. When your blood sugar gets low then your liver will use the stored glucose to keep your blood sugar level normal. If you have diabetes it means you have too much glucose in your blood. This is where insulin comes in. Diabetes is a growing epidemic in America's many nutritional diseases. There are a few factors that can cause or increase a person's chance of getting diabetes. Poor nutritional choices are a big factor in the cause of diabetes. The sad part is the increase is happening to the young children and teenagers in America. I will talk about what diabetes is, the increase in diabetes and why it’s so high, the complications that follow the diagnosis, and how it can be treated or reduced with diet and exercise.
Personal health is extremely important to everyone around the world. But it is especially important to citizens of the United States of America. Being one of the leading countries in Health technology and also in food and beverage leaves most people choosing between living a healthy lifestyle and indulging in the varieties of food we offer. Across the country, many people are living with pre-existing conditions, living in food deserts, living below the poverty line and a long list of other factors that either hinders them from eating healthy or force them to eat healthily. When trying to live a healthy lifestyle in this country not only does the promotion of prevention matter, but also the promotion of Career and job opportunities matter just as much. In the United States, Money equals Power and money also equal the opportunity to create and live a healthier lifestyle.