The pituitary gland is responsible for the functions of other endocrine glands and cells. It is a pea-sized structure and is situated in a bony hollow beneath the base of the brain and just behind the bridge of your nose hangs from the base of the brain. The gland consists of two parts, called the anterior lobe and posterior lobe, and each of which has different functions. It is connected by nerve fibres to the hypothalamus which is a brain area that controls pituitary activity.

The two lobes of the pituitary gland produce different hormones which stimulate the activity of different glands or cells.

The hormones produced by the Anterior lobe are;

hGH (human growth hormone) or somatotropin
TSH (thyroid-stimulating hormone) or thyrotropin
FSH (follicle-stimulating hormone)
LH (Luteinising hormone)
PRL (Prolactin)
ACTH (Adrenocorticotropic hormone) or corticotrophin
MSH (Melanocyte-stimulating hormone)

The hormones produced by the Posterior lobe are;

ADH (Anti-dureitic hormone) or vasopressin
OT Oxytocin