Which eye structure does not contain blood vessels?
A) cornea
B) iris
C) sclera
D) retina
E) choroid
Answer: A
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The vasa recta
A. supplies blood to the glomerulus. B. alters the cortical solute gradient. C. collects excess water and solutes from the medullary interstitial fluid. D. collects water and solutes reabsorbed from the proximal convoluted tubule. E. surrounds the collecting duct.
What role does oxytocin play in lactation?
A. ejection of milk B. production of milk C. storage of milk D. stop production of milk
Contraction of these muscles depresses the ribs, but only during forced exhalation.
A. Internal intercostals B. External intercostals C. Serratus posterior inferior D. Scalenes E. Transversus thoracis
The first institute of sexual research was founded by:
A. Alfred Kinsey. B. Richard von Krafft-Ebing. C. Henry Havelock Ellis. D. Magnus Hirschfeld.