The most closely site that reflect core body temperature is by ear. There is a special thermometer that is used to measure the temperature of ear drum. This thermometer can measure the temperature of skin on forehead.
There are many other sites from the temperature can measure are rectum. Standard thermometer is inserted to the rectum to measure the temperature. This is the most preferable means of measuring temperature.
The normal body temperature is 36 to 34 degree celcius and the core temperature of body means the temperature of internal organs like lungs, kidney.
Rectum is the part of large intestine that is last several inches. It start from the final segment of colon and ends to the anus.
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