Which Endocrine Gland is the Main Center for Control of the Internal

Question

Which endocrine gland is the main center for control of the internal environment?  
A) Pineal
B) Hypothalamus
C) Thyroid
D) Adrenal cortex
E) Thalamus

Accepted Answer

The hypothalamus is often referred to as the "master gland" as it regulates the activity of the entire endocrine system and controls many physiological processes such as hunger, thirst, body temperature, and the sleep-wake cycle. It also has direct control over the pituitary gland, which is involved in the release of many important hormones.