The pituitary gland is an endocrine gland about the size of a pea, weighing about 5 grams. It is located at the base of the brain and rests in a small bony cavity covered by a dural fold. The pituitary gland secretes 9 hormones that regulate homeostasis. The pituitary gland is made up of three lobes: anterior, intermediate and posterior.
The anterior pituitary synthesizes and secretes the following important endocrine hormones:
Follice-stimulating hormoneMelanocyte-stimulating hormone
These hormones are released from the anterior pituitary under the influence of hypothalamus. Hypothalamus hormones are secreted to the anterior lobe by way of a special capillary system.
The posterior lobe develops as an extension of the hypothalamus. The posterior pituitary stores and secretes the following important endocrine hormones:
Hormones secreted from the pituitary gland help control the following body processes:
Some parts of pregnancy and childbirth
Breast milk production
Sex organ function
Thyroid gland function