Which of the following correctly explains why a clinical thermometer has a constriction near its bulb?

Question

Accepted Answer

To allow the thermometer to be read outside the patient's body without the mercury falling back.. The constriction in a clinical thermometer is a narrow section in the capillary tube just above the bulb. When the thermometer is removed from the patient's body, the cooling mercury contracts and the thread breaks at the constriction, preventing the mercury column from falling back into the bulb. T

Answer

A) To prevent the mercury from expanding too rapidly when in contact with the body.

Answer

B) To allow the thermometer to be read outside the patient's body without the mercury falling back.

Answer

C) To increase the sensitivity of the thermometer to small temperature changes.

Answer

D) To ensure that the mercury expands uniformly along the capillary tube.

Which of the following correctly explains why a clinical thermometer has a constriction near its bulb?

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