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The normal temperature of blood is

  • A.slightly below the body temperature
  • B.equal to the body temperature
  • C.slightly higher than the body temperature
  • D.No relation to the body temperature

Answer: C

On the key, the normal temperature of blood is slightly higher than the body temperature.

The 'body temperature' usually quoted, about 37°C (98.6°F), is measured in the mouth or under the arm. Blood circulating through the body core, warmed by the liver, muscles and other active organs, is typically a little warmer, around 38°C, which is the reading the key relies on.

Blood temperature is closely linked to body temperature, since blood distributes heat round the body, so 'no relation' is wrong; and it is not normally below the measured body temperature.

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