What is the normal range of white blood cells per milliliter of blood?
a. 40 to 50 million
b. 32 to 35 million
c. 20 to 25 million
d. 12 to 18 million
e. 5 to 10 million
e
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The hormone gastrin __________.
a. increases the activity of parietal and chief cells b. is produced in response to sympathetic stimulation c. is secreted by the pancreatic islets d. inhibits the activity of the muscularis externa of the stomach
Where does filtration occur?
A. In filtration, materials move from the peritubular capillaries to the tubules B. Between the glomerulus and the glomerular capsule of the renal corpuscle C. Between the proximal convoluted tubule and peritubular capillaries and continues along the renal tubule D. None of these are correct.
During in utero (fetal) development of the ovary, which of these occurs?
A. Cell division of primary oogonia results in the production of 2 to 4 million primary oocytes, which are present at birth. B. Cell division of primary oogonia, which all complete the first meiotic division before birth. C. Cell division of primary oogonia, which all complete both meiotic divisions before birth. D. The mitotic division of primary and secondary oocytes produces cells with 23 chromosomes each. E. A single primary oogonium remains dormant, which then undergoes rapid mitosis after birth.
. Compared to adults, infants are _______ susceptible to respiratory acidosis due to lower _________
A. more, carbon dioxide levels. B. more, residual volume. C. less, carbon dioxide levels. D. less, residual volume.