What is the primary site for conditioning inhaled air?
A. Larynx
B. Trachea
C. Nasal cavity
D. Pharynx
E. Paranasal sinuses
Answer: C
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In the diagram, which is the hair matrix?
a) A b) B c) C d) D e) G
Throughout most of the distal convoluted tubule, the tubular cells
A) actively transport urea out of the tubular fluid. B) actively reabsorb organic nutrients, plasma proteins, and ions from the filtrate. C) reclaim 60-70% of the volume of filtrate at the glomerulus. D) are impermeable both to water and to solutes. E) actively transport sodium ions out of the tubular fluid.
The resting membrane potential is
a. much closer to the equilibrium potential for Na+ than to the equilibrium potential for K+. b. much closer to the equilibrium potential for K+ than to the equilibrium potential for Na+. c. is always -90mV d. both (a) and (c) above. e. both (b) and (c) above.
Which is greater: arterial pressure or venous pressure?
A) arterial pressure B) venous pressure