A single lobe of a kidney is comprised of ________.
A. one collecting duct and all nephrons that drain into it
B. one major calyx and all of its minor calyces
C. a renal medulla and two renal columns
D. two calyces and a renal pelvis
E. one pyramid and the overlying cortex
Answer: E
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Which of the following types of adrenergic receptors are found on cardiac muscle fibers where their activation stimulates increased force and rate of contraction of the heart?
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The redness and heat of an inflamed area are due to a local hyperemia caused by ________
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Anterior pituitary hormones
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