Pituitary gland is divided into three regions or lobes. They are
- Anterior lobe
- Intermediate lobe
- Posterior lobe
The hormones of the pituitary gland help regulate the functions of other endocrine glands. The pituitary gland has mainly two parts—the anterior lobe and posterior lobe—that have two very separate functions. The hypothalamus sends signals to the pituitary to release or inhibit pituitary hormone production.
The pituitary gland or hypophysis is derived from two embryologically-distinct tissues. As such, it is composed of both neural and glandular tissue. Both tissues produce hormones that affect a large number of physiological processes.