What are the formed elements?
Bone marrow and the thymus
Blood and lymph
Blood cells and platelets
Sodium and potassium
The Correct Answer is C
A. Bone marrow and the thymus: those are organs/tissues involved in blood cell production/maturation, not the formed elements themselves.
B. Blood and lymph: these are fluid compartments, not the formed cellular elements suspended in blood.
C. Blood cells and platelets: “formed elements” refers to erythrocytes, leukocytes, and platelets (the cellular/fragment components of blood).
D. Sodium and potassium: those are electrolytes/ions in plasma, not formed cellular elements.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Phagocytosis: phagocytosis is mainly an innate immune function (macrophages, neutrophils) though phagocytes can interact with adaptive immunity.
B. Production of antibodies: antibody production by plasma cells (B-cell derived) is a hallmark of the adaptive immune response.
C. Production of interferon: interferons are part of innate antiviral defenses and are produced early by infected cells and immune cells.
D. Production of defensins: defensins are innate antimicrobial peptides produced by epithelial cells and neutrophils, not a specific adaptive response.
Correct Answer is B
Explanation
A. Fibrinogen, globulins, and albumin: those are plasma proteins, not electrolytes (they’re large molecules, not ions).
B. Bicarbonate, magnesium, chloride, and potassium ions: these are ions dissolved in plasma and are classically considered electrolytes.
C. Monocytes, basophils, and eosinophils: those are white blood cells (formed elements), not electrolytes.
D. Creatinine, urea, and uric acid: those are nitrogenous waste/metabolites present in plasma, not electrolytes.
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