How does carbon monoxide cause death?
It increases blood pressure, leading to a heart attack or stroke.
It causes an increase in carbon dioxide, which causes an increase in pH.
It occupies oxygen binding sites on hemoglobin and decreases the amount of oxygen that reaches the tissues.
It causes inflammation within the bronchioles and prevents air from reaching the alveoli.
The Correct Answer is C
A. It increases blood pressure, leading to a heart attack or stroke: This is not the primary mechanism of carbon monoxide poisoning.
B. It causes an increase in carbon dioxide, which causes an increase in pH: This is incorrect. Carbon monoxide binds to hemoglobin more tightly than oxygen, not carbon dioxide.
C. It occupies oxygen-binding sites on hemoglobin and decreases the amount of oxygen that reaches the tissues: Carbon monoxide has a high affinity for hemoglobin, leading to reduced oxygen transport in the blood, which can cause tissue hypoxia and death.
D. It causes inflammation within the bronchioles and prevents air from reaching the alveoli: This is incorrect; carbon monoxide poisoning does not work by causing inflammation.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Proximal convoluted tubule: The proximal convoluted tubule is the main site of creatinine secretion as well as the reabsorption of nutrients and water.
B. Distal convoluted tubule: While secretion occurs here, it is not the main site for creatinine; this site mainly adjusts the final urine concentration.
C. Collecting duct: This part primarily deals with water and electrolyte balance but is not the main site for creatinine secretion.
D. Loop of Henle: This structure plays a key role in water and sodium balance but does not play a significant role in creatinine secretion.
Correct Answer is A
Explanation
A. Fibroblasts: Fibroblasts are responsible for synthesizing the extracellular matrix and collagen, which are essential for tissue repair and healing after an injury.
B. Complement cells: Incorrect. Complement cells are part of the immune response that helps to mark pathogens for destruction, but they do not proliferate during tissue repair.
C. Prostaglandins: Incorrect. Prostaglandins are lipid compounds that play a role in inflammation and pain but are not cells and do not proliferate.
D. Leukotrienes: Incorrect. Leukotrienes are inflammatory mediators involved in the immune response but do not proliferate during tissue repair.
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