The clinical age of the unborn child is calculated from
A. ovulation.
B. conception.
C. the last menstrual period.
D. fourteen days after the last menstrual period.
E. fourteen days before the last menstrual period.
C
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The normal RBC "graveyard" is the liver
Indicate whether the statement is true or false
The vasa recta
A. alters the cortical solute gradient. B. supplies blood to the glomerulus. C. surrounds the collecting duct. D. collects water and solutes reabsorbed from the proximal convoluted tubule. E. collects excess water and solutes from the medullary interstitial fluid.
The secondary curves of the vertebral column are the
A) cervical and lumbar curvatures. B) thoracic and sacral curvatures. C) lumbar and sacral curvatures. D) cervical and thoracic curvatures.
A bacterium that has been associated with ulcers is
A. Staphylococcus aureus. B. Streptococcus pyogenes. C. Eschericia coli. D. Helicobacter pylori. E. Clostridium difficile.