The two quantities in a ratio are separated by a colon, which means:
A. percentage
B. multiplication
C. equivalent
D. division
d
Rationale: The two quantities in a ratio are separated by a colon, which means "division." The expression 3:4 means "there are 3 parts to a total of 4 parts," although the 3 may be divided by the 4 to give the percentage of 0.75. Ratios are frequently used to show concentrations of a medication in a solution or to express measurement equivalents and dosage of medica-tions per unit.
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Match each proprioceptor with their functions
1. Pacinian corpuscles 2. Ruffini endings 3. Nociceptors 4. Semicircular canals a) Picks up extreme changes in temperature and pressure interpreted as pain. b) Registers angular movements of the head. c) Detects rapid changes in pressure and vibration on a joint capsule. d) Detects slow changes in the position or angle of a joint.
While eating dinner, your partner suddenly grabs his throat and has a panicked look on his face. He has a weak cough, faint inspiratory stridor, and cyanosis around the lips. You should:
A. encourage him to cough as forcefully as he can. B. deliver up to five back blows and reassess him. C. place him in a supine position and open his airway. D. stand behind him and administer abdominal thrusts.