Where is core temperature typically taken from?

Core temperature is typically taken from the liver because it is considered one of the most accurate indicators of the body's internal temperature. The liver is centrally located in the body and performs vital functions that are closely tied to metabolic processes, which generate heat. Measuring temperature at this site provides a reliable reflection of the overall thermal state of the body, as it is less influenced by external environmental factors or peripheral circulation changes compared to other locations.

Other options, while they may have their uses in specific medical scenarios or research settings, do not offer the same level of accuracy for core body temperature assessment. For example, assessing temperature from the heart or the brain can be complicated and is not as commonly practiced due to access issues and the potential for variability based on surrounding tissues. The lungs, while involved in thermoregulation through respiration, do not serve as a standard site for measuring core temperature.