Name the structure identified with a question mark from this summary chart of how the nervous system controls homeostasis.

One important development during the 3rd trimester that will insulate the infant against changes in temperature is a. the deposition of fat under the skin b. the closing of the septum between c. the atria of the heart d. the beginnings of lung functioning e. the beginnings of light and sound sensing

Which of the following is a common response to cell signaling?

Which of these is not a nucleotide base found in dna?