Why does a problem with pituitary gland lead to problems in other body systems?
Pituitory gland is the master gland situated at the base of brain. It secretes many hormones. So problems with this gland leads to problems in many other body systems.
Hypothalamus has direct control over the pituitary gland. So many releasing factors are secreted by hypothalamus to pituitary gland. You have portal circulation between hypothalamus and the pituitary gland. So the releasing factors are directly poured to pituitary gland. Hypothalamus is affected by the brain. So you have indirect control over the pituitary gland.
ADH antidiuretic hormone - pituitary gland-kidneys TRH thyroitropin releasing hormone - pituitary gland-thyroid gland CRH corticotropin releasing hormone - pituitary gland-adrenal gland GnRH Gonadotropin-releasing hormone - pituitary gland-gonads Oxytocin ovaries pituitary glands-ovaries PIH prolactin inhibitors hormone - pituitary gland-mammary glands.