pituitary hormones

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antidiuretic hormone

increases water reabsorption (water returns to the blood)

hyposecretion of ADH

causes diabetes insipidus

hypersecretion of ADH

causes syndrome of inappropriate antidiuretic hormone

oxytocin

initiates labor, promotes milk secretion

adrenocorticotropic hormone

promotes secretions of some hormones by adrenal cortex, especially cortisol

hypersecretion of ACTH

causes Cushing disease

follicle-stimulating hormone

stimulates egg production, increases estrogen secretion. stimulates sperm production

hyposecretion of FSH

causes failure of sexual maturation

growth hormone (somatotropin)

bone, cartilage, liver, muscle, and other tissues. increases use of fats for energy

hyposecretion of GH

causes pituitary dwarfism in children

hypersecretion of GH

causes gigantism in children, acromegaly in adults

luteinizing hormone

promotes ovulation, stimulates production of estrogen and progesterone. promotes secretion of testosterone

hyposecretion of LH

failure of sexual maturity

prolactin

along with other hormones, promotes lactation

hyposecretion of prolactin

causes poor lactation

hypersecretion of prolactin

causes galactorrhea

thyroid-stimulating hormone

stimulates secretion of thyroid hormone

hyposecretion of TSH

causes cretinism in infants; myxedema in adults

hypersecretion of TSH

causes graves disease, exophthalmos

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