Gastritis, peptic ulcers and gastric cancer can all be caused by
A. Helicobacter pylori, a bacterium.
B. increased secretion of gastric bicarbonate.
C. pH of the stomach contents continuously greater than 4.
D. increased mucus production by the neck cells.
E. None of these choices is correct.
A
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The fetal shortcut from the right atrium to the left atrium is the
A. ductus arteriosus. B. foramen ovale. C. umbilical artery. D. ductus venosus. E. umbilical vein.
The opposite of tensile force (tension) is ___________________ force. ________________________________________
Fill in the blank(s) with the appropriate word(s).
Select the correct statement about urinary system development
A) The metanephric ducts will become the urethras. B) The pronephros (first tubule system) develops during the tenth week of gestation. C) The mesonephros will develop into the kidneys. D) Kidneys develop from urogenital ridges.
The left optic tract contains axons from
A. the right half of the left retina and the left half of the right retina. B. the left half of the left retina and the right half of the right retina. C. the left half of each retina. D. the right half of each retina.