Jorge,who just finished a large dinner an hour before,is offered a slice of pizza by his roommate.Jorge says,"No thanks.I'm not hungry." The digestive track hormone ________ is sending the "I am not hungry" signal to Jorge's brain.
A) ghrelin
B) orexin
C) serotonin
D) PYY

Question

Quizplus · Accepted Answer

PYY (peptide YY) is known as the "satiety hormone" because it is released from the digestive tract when we eat and helps to suppress appetite by sending signals to the brain that we are full and do not need to eat. Therefore, in this scenario, PYY is likely responsible for Jorge's lack of hunger despite being offered pizza after a large meal.

Jorge,who Just Finished a Large Dinner an Hour Before,is Offered