The ratio of the volume of red blood cells to the total volume of blood is the definition for
Hemoglobin
Hematocrit
Erythropoietin
Erythrocyte sedimentation rate
The Correct Answer is B
a) Hemoglobin: Hemoglobin is the oxygen-carrying protein inside RBCs, measured in grams per deciliter.
b) Hematocrit: Hematocrit is the percentage of whole blood volume made up by red blood cells (RBCs). It's used to assess anemia or polycythemia.
c) Erythropoietin: This is a hormone (mostly from the kidneys) that stimulates RBC production in the bone marrow.
d) Erythrocyte sedimentation rate: This test measures how quickly RBCs settle in a test tube, used as a nonspecific marker for inflammation.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
a) Prolactin (PRL): Secreted by anterior pituitary to stimulate milk production.
b) Adrenocorticotropic hormone (ACTH): Stimulates adrenal cortex; anterior pituitary product.
c) Follicle-stimulating hormone (FSH): Produced by the anterior pituitary; regulates gonads.
d) Antidiuretic hormone (ADH): ADH is produced by the hypothalamus and stored/released by the posterior pituitary.
e) Luteinizing hormone (LH): Another anterior pituitary hormone involved in reproduction.
Correct Answer is D
Explanation
a) It is transported to the liver and becomes part of the bile: This applies to bilirubin, a byproduct of heme, not iron.
b) It is converted into stercobilin and gives color to feces: Stercobilin is derived from bilirubin, not iron.
c) It is used to synthesize proteins: While iron is important in protein function, its primary fate is recycling for hemoglobin.
d) It attaches to transferrin and is transported to bone marrow for use in hemoglobin synthesis. Iron is bound to transferrin in the blood and transported to the bone marrow for new red blood cell (hemoglobin) synthesis.
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