This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Physiology
Brain temperature is most accurately measured through 
Select and explain. 
A. Tympanic membrane, B. Nasopharynx, C. Scalp, D. Cornea
A: Tympanic membrane
Answer: A: Tympanic membrane 
Explanation: Core temperature can be estimated bymeasuring the temperature of the lower esophagus, pulmonary aery, nasopharynx, or tympanum . Brain temperature is usually considered a "central" temperature, and in the absence of intracranial pathology, it can be estimated by measuring tympanic or esophageal temperatures Ref ganong's review of medical physiology 25e