steroid hormones - -synthesized from cholesterol, easily pass through membrane
nonsteroid (protein) hormones - -Synthesized from amino acids, can't penetrate cell wall
anterior pituitary gland - -Frontal lobe. adenohypophysis - It makes and secretes six
different hormones: FSH, ACTH, TSH, and growth hormone
Gonadotropin-releasing hormone (GnRH) - -Promotes secretion of follicle-stimulating
hormone (FSH) and luteinizing hormone (LH)
Thyrotropin-releasing hormone (TRH) - -Promotes secretion of thyroid-stimulating
hormone (TSH)
posterior pituitary gland - -Back lobe. Neurohypop hysis- stores and releases hormones -
ADH, oxytocin
Corticotropin-releasing hormone (CRH) - -Promotes secretion of adrenocorticotropic
hormone (ACTH)
Prolactin Releasing Hormone (PRH) - -stimulates release of prolactin
Prolactin-inhibiting hormone (PIH) - -Inhibits secretion of prolactin (PRL)
Growth hormone-releasing hormone (GHRH) - -Promotes secretion of growth hormone
(GH)