Plasma proteins contribute to the
pressure of the blood.
osmotic
filtration
central venous
hydrostatic
The Correct Answer is B
A. pressure of the blood: Not primarily—systemic blood pressure is mainly from cardiac output and vascular resistance; proteins contribute minimally.
B. osmotic: Plasma proteins (especially albumin) generate colloid osmotic/oncotic pressure that pulls fluid into capillaries.
C. filtration: They oppose filtration by favoring reabsorption (their oncotic pull counters hydrostatic push).
D. central venous: CVP reflects blood volume, venous tone, and right heart function, not plasma protein levels directly.
E. hydrostatic: Hydrostatic pressure is due to fluid column and pumping; proteins affect oncotic, not hydrostatic, pressure.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. stomach: the stomach is an organ of the alimentary canal (not an accessory organ).
B. pharynx: the pharynx is part of the alimentary canal (passageway), not an accessory organ.
C. esophagus: the esophagus is part of the alimentary canal (conduit), not accessory.
D. pancreas: the pancreas is an accessory organ (secretes digestive enzymes and bicarbonate into the duodenum).
Correct Answer is {"dropdown-group-1":"B","dropdown-group-2":"B"}
Explanation
A. Colony-stimulating factor; negative: colony-stimulating factors (CSFs) chiefly stimulate white blood cell production, not RBCs. The feedback characterization here is not applicable to erythropoiesis.
B. Erythropoietin; positive: erythropoietin (EPO) does stimulate RBC production, but the regulatory loop is negative feedback. So labeling it “positive” is wrong.
C. Erythropoietin; negative: EPO is the hormone that stimulates RBC production and it is regulated by a negative feedback mechanism based on tissue oxygenation.
D. Colony-stimulating factor; positive: CSFs affect leukocyte lines, and erythropoiesis is not regulated by a positive-CSF loop.
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