Q:

Why will the metal bell of a stethoscope that is at the room’s air temperature, produce the sensation of cold when placed on the patient’s skin?

belongs to book: Examination Questions and Answers in Basic Anatomy and Physiology|Martin Caon|| Chapter number:20| Question number:59

waelhammad

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2022-10-22

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Why will the metal bell of a stethoscope that is at the room’s air temperature, produce the sensation of cold when placed on the patient’s skin?

The skin is at a lower temperature than the bell.
The stethoscope bell is a good conductor of heat.
The stethoscope bell is a poor conductor of heat.
Sweat evaporating from under the bell cools the skin.

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waelhammad

2022-10-22

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B: Being a good conductor of heat, the metal bell will gain heat from the skin until all its mass reaches skin temperature. A non- conductor would only gain heat until the surface in contact reached skin temperature.

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