A nurse is teaching a class about oxygen transport in the circulatory system. Which of the following transports oxygen in the blood?
Platelets
Neutrophils
Hemoglobin
Lymphocytes
The Correct Answer is C
Choice A reason:
Platelets are involved in blood clotting and do not play a role in oxygen transport. Their primary function is to prevent bleeding by forming clots in damaged blood vessels.
Choice B reason:
Neutrophils are a type of white blood cell that helps fight infection. They are part of the immune system and do not transport oxygen.
Choice C reason:
Hemoglobin, a protein found in red blood cells, is responsible for transporting oxygen from the lungs to the tissues and carbon dioxide from the tissues back to the lungs. It binds with oxygen in the lungs and releases it in the body’s tissues, playing a critical role in respiratory gas exchange.
Choice D reason:
Lymphocytes are another type of white blood cell involved in the immune response. They do not carry oxygen but are vital for fighting infections and producing antibodies.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A reason:
Calculating the total intake includes converting ounces to milliliters and adding all fluid intakes. 4 oz juice equals 120 mL, 6 oz hot tea equals 180 mL, ice chips are counted as half their volume, so 100 mL ice chips equals 50 mL, 150 mL IV bolus, and 8 oz broth equals 240 mL. Adding these up: 120 + 180 + 50 + 150 + 240 = 740 mL. Choice A, 600 mL, underestimates the total intake, excluding necessary details in the calculation.
Choice B reason:
Let’s calculate step by step:
-
Juice: 4 oz × 30 mL = 120 mL
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Tea: 6 oz × 30 mL = 180 mL
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Ice chips: 100 mL × 0.5 = 50 mL (since only half of the volume of ice is counted as fluid)
-
IV bolus: 150 mL
-
Broth: 8 oz × 30 mL = 240 mL
Now add them:
120 + 180 + 50 + 150 + 240 = 740 mL
Choice C reason:
800 mL inaccurately inflates the total intake. Accurate calculation yields 740 mL as the total fluid intake, considering all conversions and additions. Choice C misrepresents this value.
Choice D reason:
900 mL is another overestimate. Proper conversion and summation of all fluids indicate the total intake is 740 mL. Choice D is significantly higher than this calculated total, demonstrating the importance of precise conversion and addition for accurate records.
Correct Answer is B
Explanation
Choice A reason:
Vegetables are generally safe and are not typically restricted in the diet of a client taking an MAOI. They do not contain high levels of tyramine, which can interact adversely with MAOIs.
Choice B reason:
Smoked sausage should be eliminated from the diet as it contains high levels of tyramine. Consuming tyramine-rich foods while taking MAOIs can lead to hypertensive crises, making it essential to avoid such foods.
Choice C reason:
Chicken is a safe protein choice and does not need to be eliminated from the diet of a client on an MAOI. It does not pose a risk of high tyramine levels.
Choice D reason:
Cherries are safe to consume and do not contain high levels of tyramine, so they do not need to be restricted in the diet of a client taking an MAOI.
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