The nurse is assisting in a seminar for newly licensed nurses, teaching about characteristics of the heart. The nurse shows understanding of the heart when she states that the innermost layer of the heart is called the.
chambers.
pericardium.
epicardium.
endocardium.
The Correct Answer is D
Choice A rationale:
Chambers refer to the four compartments of the heart, not a layer of the heart.
Choice B rationale:
Pericardium is the sac that surrounds the heart, not a layer of the heart itself.
Choice C rationale:
Epicardium is the outermost layer of the heart, not the innermost.
Choice D rationale:
Endocardium is indeed the innermost layer of the heart, lining the inner surfaces of the heart chambers and valves.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale:
Milk contains lactose, a sugar that can’t be properly digested by those with lactose intolerance, leading to symptoms like nausea, bloating, flatulence, and diarrhea.
Choice B rationale:
Soybeans do not contain lactose and are often used as a dairy substitute for those with lactose intolerance.
Choice C rationale:
High fiber foods do not contain lactose and can actually help regulate the digestive system, though they may cause bloating and gas in some people.
Correct Answer is ["1140"]
Explanation
To calculate the total intake, we need to convert all measurements to mL. 1 oz is approximately 30 mL, 1 cup is approximately 240 mL. So, 4 oz of soda is 120 mL, 12 oz of water is 360 mL, 1 cup of gelatin is 240 mL, and 1/2 cup of broth is 120 mL. Adding these to the 300 mL of IV fluid gives us 1140 mL. However, the toast is not a liquid and cannot be measured in mL, so it is not included in the total intake.
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