Sonya has had classes all morning.Because she hasn't eaten since breakfast,she is now extremely hungry.Sonya's hunger is being triggered by the hormone ________,which is secreted by the ________.

A) orexin;hypothalamus
B) leptin;hypothalamus
C) PYY;stomach
D) orexin;stomach

Hypothalamus

A region of the brain that controls various autonomic functions, including temperature regulation, hunger, thirst, and the release of hormones.

Stomach

The stomach is a muscular organ located in the upper abdomen that receives food from the esophagus, producing gastric acid and digestive enzymes to aid in food digestion.

Orexin

A type of neurotransmitter that plays an important role in regulating wakefulness, appetite, and arousal.