Which of the following does not contribute to defense of the respiratory system?
a. coughs and sneezes
b. cilia-propelled mucus escalator
c. alveolar macrophages
d. normal microbial population of the lungs
e. IgA antibodies
D
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Production of angiotensin II is important in the response to a(n) __________________ in the mean arterial blood pressure.
a) increase b) decrease
The body's ability to resist infections from pathogens is called ____________________.?
Fill in the blank(s) with correct word
The gastric enzyme ________ is secreted in inactive form and activated by the low pH of gastric juice.
A. rennin B. trypsin C. intrinsic factor D. pepsin
Which cranial nerves are associated with the parasympathetic division of the ANS?
a: III b: IV c: V d: VII e: IX f: X g: XII A. a, d, e, f B. b, c, d, e C. a, c, d, g D. c, d, f, g E. b, e, f, g