Question

The appetite and satiety centres in the brain of man are located in the region of the
A. Cerebral hemisphere
B. Cerebellum
C. Medulla oblongata
D. Hypothalamus

Answer 1

Hint: The appetite and satiety centres in the brain of man are located in the region that is a part of the limbic system. This region is of the size of an almond and connects the nervous system to the endocrine system through the pituitary gland.

Complete answer:
Option (A) is incorrect. The human brain is formed by two cerebral hemispheres that are separated by a groove. This part of the brain controls the muscle functions and also controls speech, thought, emotions, reading, writing, etc.
Option (B) is incorrect. The cerebellum is located at the backside of the brain that is involved in many functions such as maintaining the body balance and posture, coordinating the voluntary movements of the skeletal muscles.
Option (C) is incorrect. The medulla oblongata is a long stem-like structure that makes up the lower part of the brainstem. It consists of reflex centres that control the heartbeat, blood vessel diameter, and rhythm of breathing as well as other autonomic functions ranging from vomiting to sneezing.
Option (D) is correct. The centres that control the appetite and satiety (feeling of fullness and suppression of hunger for some time after the intake of a meal) are located in the hypothalamus of the brain. This region of the brain is located below the thalamus and is a part of the limbic system.

Hence, the correct option is (D).

Note:
The two hormones that are involved in the regulation of hunger and satiety are ghrelin and leptin, respectively. They are signaling hormones that communicate with the hypothalamus and in turn, regulates appetite and satiety.