What is the term for the ratio of the amount of water vapor in a volume of gas compared to the amount of the water in gas saturated at a normal body temperature of 37° C?
a. Percent body humidity (BH)
b. Relative humidity (RH)
c. Absolute humidity
d. Water vapor pressure
ANS: A
The %BH of a gas is the ratio of its actual water vapor content to the water vapor capacity in saturated gas at body temperature (37° C). Thus, %BH is the same as RH, except that the capac-ity (or denominator) is fixed at 43.8 mg/L.
You might also like to view...
Which of the following pertains to the positioning setup for an AP oblique foot projection on a patient with a high longitudinal arch?
1. Rotate the patient's foot 60 degrees. 2. Angle the central ray 15 degrees proximally. 3. Align the long axis of the foot with the long axis of the collimated field. 4. Center the central ray to the third metatarsal base. a. 1 and 3 only b. 3 and 4 only c. 1, 2, and 4 only d. 1, 3, and 4 only
The metric system adds prefixes to the basic units to indicate the value (multiple or submultiple) of the unit. For example, when the prefix kilo- is added to the unit meter, it becomes kilometer, which has a value of _____ meters
A) 1000 B) 100 C) 10 D) .010