Carcinogens are factors related to the formation of various malignancies. Which factor has the greatest impact on the development of all cancers?
chemical agents
environmental factors
viruses
defective genes
The Correct Answer is B
A. Chemical agents: Chemical agents (e.g., tobacco smoke, asbestos) are significant carcinogens but are not the most influential across all types of cancer.
B. Environmental factors: Environmental factors, including exposure to radiation, chemicals, and lifestyle choices, have a broad impact on cancer development. This is the most comprehensive factor, as it encompasses various elements that contribute to cancer risk.
C. Viruses: Certain viruses (e.g., HPV, Hepatitis B) are linked to specific cancers, but they are not the primary cause of most cancers.
D. Defective genes: Genetic mutations play a critical role in cancer development, but they are often triggered by environmental factors, making environmental factors the most significant overall.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Monro-Kellie hypothesis: The Monro-Kellie hypothesis explains the relationship between the volumes of brain tissue, blood, and cerebrospinal fluid in the cranium, but it is not a diagnostic tool for assessing LOC.
B. Glasgow Coma Scale: The Glasgow Coma Scale (GCS) is a standardized tool used to assess a client's level of consciousness, particularly in cases of head injury. It evaluates eye opening, verbal response, and motor response.
C. Cranial nerve function: Cranial nerve assessment is important in evaluating neurological function, but it is not a comprehensive tool for gauging LOC.
D. Mental status examination: A mental status examination assesses cognitive functions, but the Glasgow Coma Scale is more appropriate for evaluating LOC in the context of head trauma.
Correct Answer is A
Explanation
A. Tolerance: Tolerance occurs when an individual requires increasing amounts of a substance to achieve the same effect. This can explain why a person with a high blood alcohol level might not appear intoxicated if they have developed tolerance.
B. Addiction: Addiction is a chronic disease involving compulsive substance use. While related to tolerance, addiction itself does not specifically explain the lack of observable intoxication symptoms.
C. Alcoholism: Alcoholism is a condition involving dependency on alcohol. It can involve tolerance, but the term "alcoholism" does not specifically address the immediate observation of high alcohol levels without visible intoxication.
D. Relapse: Relapse refers to returning to substance use after a period of abstinence. It does not specifically explain the lack of visible intoxication despite high blood alcohol levels.
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