The vasa recta is a specialized portion of the
A. glomerulus.
B. afferent arteriole.
C. efferent arteriole.
D. peritubular capillary.
E. interlobular artery.
D
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The thirst center in the hypothalamus is stimulated by ________ of the extracellular fluid, and is inhibited by ________.
A. a decrease in sodium ions; an increase in sodium ions B. a decrease in the osmotic pressure; stimulation of osmoreceptors C. nerve impulses from the cerebrum; nerve impulses from the thalamus D. an increase in the osmotic pressure; distension of the stomach by water
The hollow cavity within the blastocyst is the
A) blastula. B) gastrula. C) blastocoele. D) trophoblast. E) ootid.
Tolerance to antigens is induced by
A. blocking costimulation. B. stimulating interleukin 2 production. C. preventing suppressor T cell proliferation. D. promoting the release of cytokines. E. stimulating helper T cell division.
Going from superior to inferior, the regions of the spine would be in which order?
a. cervical, thoracic, sacrum, coccyx, lumbar b. cervical, thoracic, lumbar, sacrum, coccyx c. cervical, lumbar, thoracic, coccyx, sacrum d. cervical, thoracic, lumbar, coccyx, sacrum