One of the risk factors for this disease is exposure to UA (ultraviolet) rays. Sunlight is our main source for UV rays. Tanning beds is another source. While UA rays only make up some portion of the sun’s light, UA rays are the main cause for damage to the skin. These rays damage the DNA of the skin cells.
What are three primary techniques for minimizing exposure to radiation and radioactive materials? (1 point) A. Distance, minimize exposure, and proper Personal Protective Equipment (PPE) B. Prevention, distance, and shielding C. Proper PPE, distance, and proper decontamination D. Time, distance, and shielding 5. The route of entry is how the agent gets into your body.
Enlargement of sebaceous glands. a. yellowish ‘papules’ on the face b. also on chest, areola, genitals 48. How can damage by sunlight be avoided or treated? SOLUTIONS: 49. Shading/protecting the skin!
Where we left off: Chemoreceptors: -A receptor that responds to the chemical composition and the fluid around it (PaCO2 & pH) -Located in the medulla/respond to changes in H+ *Increase in H+=ACIDOSIS -Increase in the resp rate/tidal volume *Decrease in H+=ALKALOSIS -Decrease in resp rate/tidal volume Mechanical Receptors: -Located in lungs, upper airways, chest wall & diaphragm *Stimulated by physiological factors -Irritants, muscle stretching & alveolar wall distortion **Hering-Bruer Reflex -Prevents the overdestension of lungs CHAPTER 27 Problems w/nose & sinuses: 1. Deviated Septum -Severely shifted septum -Caused by trauma, present at birth -Interferes with airflow & sinus drainage
These mistakes result in mutation leading to loss or inappropriate expression of affected genes. Studies indicate that genetic alterations in the P53 tumor suppressor gene play an important role in the development of skin cancer. The p53 gene is also involved in apoptosis (programmed cell death), and it has been proposed that p53 serves as a “guardian of the genome” by aiding in DNA repair or by going through apoptosis to elimated cells with excessive DNA damage. Unrepaired damage in the p53 gene are transformed into mutations thereby initiating the process of carcinogenesis. Following repeated exposures to UV, keratinocytes (sunburn cells) carrying
Carcinogens are a class of substances that are directly responsible for damaging DNA, promoting or aiding cancer. Tobacco, asbestos, arsenic, radiation such as gamma and x-rays, the sun, and
The health of RadiologicTechnologists and the patient are at risk when concerning X-rays because of the gamma radiation rays, yet X-rays are vital to finding out what the medical issue is. An Associates Degree is required to be a Radiologic Technician. The skills needed to obtain the job are the ability to order items in a defined format or according to set rules; active listening skills; good oral communication abilities, radiologic positioning aids and locators; knowledge of x-ray archiving systems and medical x-ray darkrooms and supplies; and being able to use hypodermic needles. I think I would be a good fit as a Radiologic Technician because I want to help those who are sick and in pain by finding out
Why is it important? The oxygen in our atmosphere is important for breathing but also acts as a protection that shields us from harsh solar ultraviolet radiation. Much of this comes from another molecular form of oxygen, O(3), or
Radiographic film on the opposite side of the source is exposed when it is struck by radiation passing through the objects being tested. More radiation will pass through if there are cracks, breaks, or other flaws in the metal parts and will be recorded on the film. By studying the film, structural problems can be detected. Co-60 is used because it is an emitter of gamma rays which will penetrate metal parts. Co-60 has a half-life of 5.3 years and can be used in a chemically inert form held inside a sealed container.
Therefore has legislation that prohibits discrimination. Several agencies, such as the Public Prosecution Service and the antidiscrimination services, are involved in the fight against discrimination. http://www.government.nl/issues/discrimination/government-measures Environmental Factors Environmental health addresses all the physical, chemical, and biological factors external to a person, and all the related factors impacting behaviours. It encompasses the assessment and control of those environmental factors that can potentially affect health and is targeted towards preventing disease and creating health-supportive environments. Pollution- Pollution is the presence in or introduction into the environment of a substance which has harmful or poisonous effect.