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 D
Explanation
Choice A rationale:
A lumbar puncture is not typically performed to rule out bone marrow involvement in non-Hodgkin lymphoma. Imaging studies and bone marrow biopsies are more appropriate for evaluating bone marrow involvement.
Choice B rationale:
Determining the level of cell differentiation is not the primary purpose of a lumbar puncture in non-Hodgkin lymphoma. This information is usually obtained from a biopsy of the affected lymph nodes or organs.
Choice C rationale:
Identifying the specific lymph cell type involved is not the main objective of a lumbar puncture in non-Hodgkin lymphoma. This information is usually determined through lymph node biopsy and other imaging studies.
Choice D rationale:
The purpose of a lumbar puncture in non-Hodgkin lymphoma is to find any central nervous system involvement. Lymphoma cells can spread to the central nervous system, and a lumbar puncture allows for the examination of cerebrospinal fluid to detect any cancerous cells, which can guide treatment decisions.
Correct Answer is C
Explanation
Choice A rationale: Drinking 14 glasses of water daily is not specifically harmful for patients with thrombocytopenia, though it is important to ensure fluid intake is balanced with the individual's needs. However, excessive water intake is generally not related to increased bleeding risks, which is a primary concern for patients with low platelet counts.
Choice B rationale: Shaving once a day using an electric razor is an appropriate precaution for patients with thrombocytopenia. Electric razors are less likely to cause cuts compared to traditional razors, thereby reducing the risk of bleeding. This measure is important for individuals with low platelet counts to minimize the risk of bleeding from minor injuries.
Choice C rationale: Using an alcohol-based mouthwash twice a day is not recommended for patients with thrombocytopenia. Alcohol-based mouthwash can cause dryness and irritation of the mucous membranes, which may lead to bleeding, especially in individuals with low platelet counts. Instead, non-alcoholic mouthwashes should be used to maintain oral hygiene without the risk of causing mucosal damage.
Choice D rationale: Brushing teeth with a soft-bristle toothbrush twice a day is recommended for patients with thrombocytopenia. Soft-bristle toothbrushes help reduce the risk of gum injury and bleeding, which is important for individuals with low platelet counts. Maintaining good oral hygiene with minimal trauma is crucial for these patients
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