Polycythemia is best defined as a
A) lower than normal concentration of leukocytes.
B) higher than normal concentration of leukocytes.
C) higher than normal concentration of erythrocytes.
D) higher than normal concentration of protein in the plasma.
E) lower than normal concentration of erythrocytes.
Answer: B) higher than normal concentration of leukocytes.
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Which of the following vessels supplies 80% of the cerebrum with oxygenated blood?
A. Superficial temporal artery B. Occipital artery C. Internal carotid artery D. Anterior cerebral artery E. Middle cerebral artery
At the Holy Frijoles restaurant, you order a burrito grande with extra sour cream and cheese and an order of tortilla chips with guacamole. You're very satisfied with your meal–it's a lot of food–and as you finish off the last of the chips, the
satiety center in your ________ starts letting you know that you've had enough to eat now. A) cerebellum B) pons C) mid-brain D) hypothalamus E) medulla oblongata
The nephron loop is composed of (the)
A) thick segment. B) descending limb. C) ascending limb. D) thin segment. E) All of the answers are correct.
How does contraction of smooth muscle differ from that of skeletal muscle? Include the following in your answer : Ca2+ ions, troponin, tropomyosin, calmodulin, myosin-binding sites, light-chain region, actin, myosin, and cross bridge cycling
What will be an ideal response?