How Did Dr

question 52

Multiple Choice

How did Dr. H.T. Hammel determine that it was the hypothalamus in dogs which was sensing their temperature?

• A) He kept their heads at a different temperature than their bodies and they reacted only according to the temperature of their heads.
• B) He kept the hypothalamus at a different temperature than their external environment, and they reacted only according to the temperature of the hypothalamus.
• C) The dogs did not react at all to changes to the external environment unless their head temperature was changed, also.
• D) The dogs would only pant when their skin temperature was increased.
• E) The dogs would not shiver when just the hypothalamus was cooled.