The abbreviation used for "twice a day" is ________.

A. q.i.d.
B. t.i.d.
C. prn
D. b.i.d.


Answer: D

Anatomy & Physiology

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The relative refractory period occurs after the action potential is complete because of

a. the lingering inactivation of the voltage-gated Na+ channels b. the slowness of the voltage-gated K+ channels c. the action of the sodium-potassium pumps d. both a and b e. both b and c

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Which of the following statements concerning the electron-transport chain is true?

A. Water serves as the final electron acceptor. B. The chemiosmosis model refers to movement of water. C. Chemiosmosis forms carbon dioxide. D. Hydrogen ions are pumped across the plasma membrane. E. Electrons pass from one electron carrier to another in the electron transport chain.

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In general, sympathetic preganglionic fibers are ________ and postganglionic fibers are ________

A) long; short B) short; long C) long; long D) short; short

Anatomy & Physiology