An anemia resulting from a decreased red blood cell (RBC) number causes the blood to become more viscous or thickened.
a. true
b. false
Answer: b. false
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If all other conditions remain the same and the concentration of a nonpenetrating solute increases inside a cell, which is most likely to occur?
A. The solute will diffuse across the membrane until its concentration is equal on both sides of the membrane. B. Water will tend to leave the cell because the interior has a decreased osmolarity. C. Water will tend to enter the cell because the interior has a decreased osmolarity. D. Water will tend to leave the cell because the interior has an increased osmolarity. E. Water will tend to enter the cell because the interior has an increased osmolarity.
Which of the following structures is an exception to the general principle surrounding blood vessel oxygenation levels?
A. Pulmonary artery B. Aorta C. Pulmonary veins D. Both a and c
Blood chemistry changes are examples of ______ stimuli, whereas sympathetic nervous system impulses are examples of _______ stimuli for hormone release
A. neural; humoral B. positive; negative C. Negative; positive D. humoral; neural
In fetal circulation, the ________ bypasses the liver and the ________ bypasses the lungs
A) foramen ovale; ductus venosus B) ligamentum arteriosum; foramen ovale C) ductus arteriosus; ductus venosus D) ductus venosus; ductus arteriosus E) ligamentum venosum; ligamentum arteriosum