The clinical thermometer differs from other mercury-in-glass thermometers because it has
I. a constriction
II. a wide range
III. a short range
IV. a narrow bore.
Which of the above are correct?
I and II only
I and III only
III and IV only
I,II and III only
I, III and IV only
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The correct answer is E I, III, and IV only.
The clinical thermometer possesses specific design features that differentiate it from standard laboratory mercury-in-glass thermometers:
I. A constriction: Also known as a "kink," this narrow part of the tube just above the bulb prevents mercury from flowing back into the bulb immediately after being removed from a patient. This allows the user to read the temperature accurately before it drops.
III. A short range: Clinical thermometers are specialized for human body temperature and typically only cover a narrow range, such as 35°C to 42°C (or 43°C). In contrast, laboratory thermometers have a much wider range (e.g., -10°C to 110°C).
IV. A narrow bore: The capillary tube is designed to be very thin. This increases the sensitivity of the thermometer, as a small expansion of mercury results in a significant and easily visible movement along the scale.
The AI seemed to have not read the question properly. It explained which of the following were features of a clinical thermometer instead of featueres that differentiate clinical themometer from other themometers like the question asked.
