Lymph is similar to blood plasma, but very low in
carbon dioxide
sodium and potassium
protein
metabolic waste
electrolytes
The Correct Answer is C
A. Carbon dioxide: Lymph contains dissolved gases, including carbon dioxide, in concentrations similar to blood plasma. CO₂ levels are not markedly reduced in lymph compared to plasma.
B. Sodium and potassium: Electrolyte concentrations, including sodium and potassium, in lymph are similar to those in blood plasma. Lymph effectively mirrors plasma ionic composition.
C. Protein: Lymph is very low in protein compared to plasma. Most plasma proteins, such as albumin and globulins, are too large to pass easily through capillary walls, so lymph carries only small amounts of protein, giving it a more watery consistency.
D. Metabolic waste: Lymph transports some metabolic wastes, such as urea and lactate, in amounts similar to plasma. These are not notably low in lymph.
E. Electrolytes: Electrolytes are present in lymph at concentrations comparable to blood plasma. The ionic balance in lymph helps maintain proper osmotic pressure and fluid movement in tissues.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. 130/90 mm Hg:A blood pressure of 130/90 mm Hg is considered elevated or stage 1 hypertension according to current guidelines. It exceeds the normal systolic and diastolic ranges.
B. 120/80 mm Hg:A reading of 120/80 mm Hg falls within the normal adult blood pressure range. Systolic values less than 120 mm Hg and diastolic values less than 80 mm Hg are considered optimal, making this the standard for healthy resting blood pressure.
C. 140/95 mm Hg:A blood pressure of 140/95 mm Hg indicates stage 2 hypertension. Both systolic and diastolic values are above the normal range, suggesting increased cardiovascular risk.
D. 80/50 mm Hg:While a systolic/diastolic of 80/50 mm Hg may be normal for some individuals, particularly young, healthy adults, it is generally considered low and could indicate hypotension if accompanied by symptoms like dizziness or fainting.
Correct Answer is B
Explanation
A. Rh-positive:Rh-positive blood contains the D antigen, which can trigger an immune response in Rh-negative recipients. Therefore, it cannot be universally donated to all recipients.
B. ABO, Rh-negative:Type O, Rh-negative blood is considered the universal donor for red blood cells. It lacks A, B, and Rh antigens on the RBC surface, minimizing the risk of an immune reaction in recipients of any ABO or Rh type.
C. Rh-negative:While Rh-negative status avoids D antigen incompatibility, this choice does not specify the ABO type. Only O, Rh-negative blood lacks all major antigens, making it truly universal for RBC transfusion.
D. AB, Rh-positive:Type AB, Rh-positive blood has A, B, and D antigens on RBCs. It is not compatible with recipients who have antibodies against A, B, or Rh antigens, so it cannot serve as a universal donor.
E. AB, Rh-negative:Although Rh-negative avoids D antigen incompatibility, AB blood contains both A and B antigens, which can trigger immune reactions in recipients with anti-A or anti-B antibodies. Therefore, it is not a universal RBC donor.
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