Cortical nephrons can only produce a dilute urine while juxtamedullary nephrons can produce either dilute or concentrated urine depending upon hormonal conditions.
a. true
b. false
Answer: a. true
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A brain lesion in the ________ may cause personality abnormalities.
A. occipital lobe B. temporal lobe C. parietal lobe D. frontal lobe E. insula
Which of the following does NOT contribute to medullary hypertonicity?
a. countercurrent exchange of NaCl and H2O in the long limbs of the loop of Henle and the interstitial fluid b. the accumulation of NaCl in the medulla c. the accumulation of urea in the medullary interstitial fluid d. none of these.
An incompetent pulmonary semilunar valve could result in less blood reaching the
A. aorta. B. lungs. C. right atrium. D. heart muscle. E. right ventricle.
Fsh
A. stimulates theca interna cells to produce androgens. B. primarily effects granulosa cells. C. increases progesterone production. D. inhibits LH. E. stimulates the uterus.