Which role is attributed to the base in the acid-base balance?
Does not interact with acids.
Promotes the excretion of acid.
Activates the system of acid-base balance.
Increases the action of the hydrogen ions.
The Correct Answer is B
Choice A rationale:
The base does interact with acids in the acid-base balance. Bases, by definition, are substances that can accept hydrogen ions (protons) and neutralize acids. In the context of acid-base balance, bases help regulate the pH of body fluids by counteracting the effects of acids.
Choice B rationale:
The role of the base in the acid-base balance is to promote the excretion of acid. Bicarbonate ions (HCO3-) are a vital component of the body's buffering system, helping to neutralize excess acid. The kidneys play a crucial role in excreting acids from the body, maintaining the acid-base balance.
Choice C rationale:
The base does not activate the system of acid-base balance; instead, it is part of the body's natural buffering system. The acid-base balance is regulated by the lungs and kidneys, which work together to maintain the pH of body fluids within a narrow range (7.35-7.45)
Choice D rationale:
Bases do not increase the action of hydrogen ions. In fact, bases neutralize hydrogen ions, which are acidic. By accepting these ions, bases help to decrease the acidity of a solution, playing a key role in maintaining the body's acid-base balance.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale:
Enteric-coated iron is designed to be absorbed in the small intestine, not the stomach. Taking it with each meal might decrease its absorption due to interaction with food.
Choice B rationale:
Cobalamin (vitamin B12) deficiency can cause macrocytic anemia, not microcytic hypochromic anemia. Taking cobalamin with green, leafy vegetables does not address the specific iron deficiency seen in microcytic hypochromic anemia.
Choice C rationale:
Take the iron with orange juice 1 hour before meals is the correct answer. Vitamin C enhances the absorption of non-heme iron (the type of iron found in plant-based foods and iron supplements) by reducing it to a more absorbable form. Taking iron supplements with orange juice, which is high in vitamin C, can significantly improve iron absorption. Taking it before meals ensures better absorption due to reduced interaction with other dietary components.
Choice D rationale:
Decreasing the intake of antiseizure medications will not improve microcytic hypochromic anemia. Antiseizure medications do not directly influence iron absorption or the production of red blood cells.
Correct Answer is C
Explanation
Choice A rationale:
Palpating lymph nodes for swelling is not directly related to thrombocytopenia. Thrombocytopenia is a condition characterized by a low platelet count, which can lead to easy bruising and bleeding. Checking lymph nodes is more relevant in assessing for infection or malignancy.
Choice B rationale:
Checking temperature for elevation is important for assessing infection, which could be a cause of thrombocytopenia. However, in this context, inspecting the skin for bruising or petechiae is more specific to thrombocytopenia. Petechiae are small, red or purple dots that appear on the skin when platelet count is low.
Choice D rationale:
Examining oral mucosa for ulceration is essential in the assessment of conditions like oral cancer or infection. While thrombocytopenia could lead to bleeding in the oral mucosa, it is not the most specific or immediate concern in a patient with known thrombocytopenia.
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