Histamine:
a. family of proteins that defends against viruses.
b. natural killer cell.
c. specific bacterial surface receptor.
d. specialized type of white blood cell.
e. vasodilator agent.
E
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The trabeculae carneae in the left ventricle are ________ in the right ventricle.
A. more prominent than B. less prominent than C. not present as D. equally as prominent as E. None of these answers is correct.
Venoconstriction reduces the diameter of which vessel?
A) artery B) arteriole C) capillary D) venule E) vein
The developing kidneys are able to produce and expel urine by week ________ of development.
A. 25 B. 5 C. 15 D. 20 E. 10
The vocal cords attach anteriorly to the ____ and posteriorly to the ____.
A. thyroid cartilage, arytenoids B. thyroid cartilage, cricoid cartilage C. cricoid cartilage, arytenoids D. cricoid cartilage, cuneiforms