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Hypothalamic Hormones that regulate the Anterior Pituitary (Inhibitors…
Hypothalamic Hormones that regulate the Anterior Pituitary
Thyrotropin-releasing hormone (TRH)
Promotes secretion of thyroid stimulating hormone (TSH) and prolactin (PRL)
Thyroid stimulating hormone (TSH)
Target Organ/ tissue: Thyroid Gland
Growth of thyroid, secretion of thyroid hormone
T3, T4
Prolactin (PRL)
Target Organ/ tissue: Mammary Hormone
milk synthesis, Creation of milk
Corticotropin-releasing hormone (CRH)
Promotes secretion of adrenocorticotropic hormone (ACTH)
Adrenocorticotropic hormone (ACTH)
Target Organ/ tissue: Adrenal Cortex
Growth of adrenal cortex, secretion of glucocorticoids (cortisol)
With excess production this will turn off the production of ACTH in the hypothalamus, and the pituitary
Gonadotropin-releasing hormone (GnRH)
Promotes secretion of follicle- stimulating hormone (FSH) and luteinizing hormone (ZH)
Follicle- stimulating hormone (FSH)
Target Organ/ tissue FEMALE: ovaries
Growth of ovarian follicles and secretion of estrogen
Target Organ/ tissue MALE: testes
Sperm production
Luteinizing hormone (ZH)
Targets Organ/ tissue MALE: testes
Testosterone secretion
Targets Organ/ tissue FEMALE: ovaries
Ovulation, maintenance of corpus luteum, prepares mammary glands, prepares uterus for implantation
With excess production this will turn off the production of GnRH in the hypothalamus, and the pituitary
Growth Hormone- releasing hormone (GHRH)
Promotes secretion of growth hormone (hGH)
Growth Hormone (GH)
Target Organ/tissue: Liver, Bone, Cartilage, Muscle, Fat
Wide spread tissue growth
IGF: insulinlike growth factor
Inhibitors
Prolactin- releasing hormone (PIH)
Inhibits secretion of prolactin (PRL)
Prolactin (PRL)
Target Organ/ tissue: Mammary Gland
Milk Synthesis
Somatostatin
Inhibits secretion of the growth hormone (GH) and thyroid- stimulating hormone (TSH)
Growth hormone (GH)
Target Organ/ tissue:Liver, Bone, Cartilage, Muscle, Fat
Wide spread growth
Thyroid- stimulating hormone (TSH)
Target Organ/ tissue: Thyroid Gland
Growth of thyroid, secretion of thyroid hormone
Hormones secreted by the Anterior Pituitary Gland to various parts of the body
Impulse sent from the Hypothalamus to the posterior Pituitary
Hormones secreted by the Posterior Pituitary Gland
Antidiuretic Hormone (ADH)
Target Organ: Kidneys
Water Retention
Oxytocin (OT)
Target Organs/ Tissue: Uterus, and Mammary Glands
Labor contractions, milk release: possibly involved in ejaculation, sperm transport, sexual affection, and mother- infant bonding