Interferon is a
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.
A
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Ventilation is increased the most by
a. increases in arterial b. decreases in arterial c. increases in arterial d. decreases in arterial e. none of the above
The normal partial pressure differences between inspired air and alveolar gas for O2, CO2, H2O, and N2 can be explained because of ________.
A. net movements of CO2 toward the alveoli with net movements of O2 and H2O into the capillaries B. net movement of CO2 and N2 toward the alveoli and H2O movements toward the alveoli as respiratory water C. net movements of CO2 toward the alveoli, O2 toward the alveoli, and H2O is added along the respiratory tract D. net movements of CO2, O2, and H2O into the alveoli from blood capillaries
The spaces between podocytes are:
a. called filtration slits b. in the visceral layer of Bowman's capsule c. covered with basement membrane d. all of the above
Where are the parathyroid glands located?
A) on top of the kidneys B) directly below the Adam's apple C) within the mediastinum D) within the pancreas E) posterior surface of the thyroid gland