| pituitary hormone-releasing hormones | Hormones released by one structure (e.g., the hypothalamus or the thyroid gland) that effect the secretion of hormones from the pituitary gland. (12 Dec 1998) |
|---|---|
| pituitary hormones | Hormones secreted by the anterior and posterior lobes of the pituitary gland and the pars intermedia, an ill-defined region between the two. Their secretion is regulated by the hypothalamus. (12 Dec 1998) |
| pituitary hormones, anterior | Protein, glycoprotein, or polypeptide hormones secreted by the anterior lobe of the pituitary gland. (12 Dec 1998) |
| pituitary hormones, posterior | Hormones released from the posterior lobe of the pituitary, including vasopressin (antidiuretic hormone) and oxytocin. They are formed in the neuronal cells of the hypothalamic nuclei and stored in nerve cell endings in the posterior pituitary (neurohypophysis). (12 Dec 1998) |
| placental hormones | Hormones produced by the placenta during pregnancy, including chorionic gonadotropin and substances having oestrogen, progestin, or adrenocorticoid activity. (12 Dec 1998) |
| cortical hormones | Steroid hormone's produced by the adrenal cortex. (05 Mar 2000) |
| progestational hormones | A class of sex hormones associated with certain changes in the uterus and vagina during the menstrual cycle. They are necessary for the development of mammary tissue and for the maintenance of pregnancy. (12 Dec 1998) |
| progestational hormones, synthetic | Compounds obtained by chemical synthesis that possess progestational activity, but differ in structure from naturally occurring progestational hormones. (12 Dec 1998) |
| hormones | Chemical substances having a specific regulatory effect on the activity of a certain organ or organs. The term was originally applied to substances secreted by various endocrine glands and transported in the bloodstream to the target organs. It is sometimes extended to include those substances that are not produced by the endocrine glands but that have similar effects. (12 Dec 1998) |
| hormones, ectopic | Hormones released from neoplasms or cells outside the usual sources of hormones. Such hormones may be useful as tumour markers. (12 Dec 1998) |
| hormones, hormone substitutes, and hormone antagonists | A collective grouping for both naturally occurring and synthetic hormones, substitutes, and antagonists. (12 Dec 1998) |
| hormones, synthetic | Synthetic chemical compounds that mimic the activity of hormones produced in the body, but differ in structure from naturally occurring hormones. (12 Dec 1998) |
| sex hormones | Hormones having oestrogenic (female sex hormones) or androgenic (male sex hormones) activity. (12 Dec 1998) |
| steroid hormones | Those hormone's possessing the steroid ring system; e.g., androgens, oestrogens, adrenocortical hormone's. (05 Mar 2000) |
| neurohypophysial hormones | Hormones produced in the hypothalamus; e.g., oxytocin, vasopressin. (05 Mar 2000) |