The efferent arteriole of some juxtamedullary nephrons enters the renal medulla and becomes which of the following vessels?
A. interlobular artery
B. arcuate artery
C. vasa recta
D. glomerular capillary
E. interlobar artery
ANS: C
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Which of the following is not a factor that contributes to keeping the articular surfaces of diarthroses in contact?
A) structure and shape of the articulating bone B) arrangement and tension of the muscles C) strength and tension of joint ligaments D) number of bones in the joint
Secretion of glucagon causes
A) an increase in glycogen. B) an increase in the concentration of blood glucose. C) an increase in the formation of fat. D) an increase in the permeability of the cell membrane to glucose.
Which of the following is false regarding unsaturated fatty acids?
They contain one or more double bonds. They are found in cooking oil rather than a stick of butter. All of their hydrogen ions are occupied in double bonds. They can be formed from nuts and other plants.
Inadequate iodine in the diet would not lead to
A) hypothyroidism. B) cretinism. C) goiter. D) high blood levels of TSH. E) Grave's disease.