Which of the following serves as a sensor, or as part of a sensor, that functions in a negative feedback system?
A. Central thermoreceptor neurons whose peripheral terminals are located in the skin.
B. Plasma-membrane Calcium Receptors located in the plasma membrane of Parathyroid Gland cells.
C. Carotid artery baroreceptor neurons whose peripheral terminals are located in the walls of the carotid artery.