Endocrine System Flashcards
ductless glands that produce hormones that they release into the blood
endocrine glands
biochemicals that travels in the bloodstream and alters the metabolism of one or more cells
hormones
chemical substances generally released by the endocrine system to regulate and integrate body functions
hormones
cells with receptor proteins that respond to a particular secreted hormone
target cells
each hormone affects only __________ __________ bearing specific receptor molecules
target cells
hormones that cannot pass readily through the cell membrane and bind to receptors on the surface of target cells
water-soluble hormones
these hormones are polar molecules
they include protein hormones, peptide hormones, and most amino acid derivative hormones
water-soluble hormones
hormones that pass through the cell membrane and binds to receptors inside the cell
lipid-soluble hormones
hormones that are nonpolar and include steroid hormones, thyroid hormones, and fatty acid derivative hormones
lipid-soluble hormones
the endocrine glands are activated by other hormones
hormonal stimulus
the endocrine glands are activated by changing blood levels of certain ions and nutrients
humoral stimulus
the endocrine glands are activated by nerve fibers
neural stimulus
almond-sized part of the brain, produces multiple hormones that influence hormone production in the anterior pituitary gland
hypothalamus
the __________ also produces hormones that are stored in and released by the posterior pituitary gland
hypothalamus
regulates water levels in the body, blood volume, and blood pressure and is stored in the posterior pituitary gland
vasopressin or antidiuretic hormone (ADH)
affects human behavior and the reproductive system and is stored in the posterior pituitary gland
oxytocin
controls the anterior pituitary gland in releasing follicle stimulating hormone (FSH) and luteinizing hormone (LH)
gonadotropin releasing hormone (GnRH)
controls the anterior pituitary gland in releasing growth hormone (GH)
somatocrinin or growth hormone releasing hormone (GHRH)
controls the pituitary gland in inhibiting growth hormone (GH) and thyroid stimulating hormone (TSH)
somatostatin or growth hormone inhibiting hormone (GHIH)
controls the anterior pituitary gland in releasing adrenocorticotropic hormone (ACTH)
corticotropin releasing hormone (CRH)
controls the anterior pituitary gland in releasing thyroid stimulating hormone (TSH) and prolactin
thyrotropin releasing hormone (TRH)
controls the anterior pituitary gland in releasing prolactin
prolactin releasing hormone (PRH)
inhibits the release of prolactin from the anterior pituitary gland
prolactin inhibiting hormone (PIH) dopamine
pea-sized structure attached to a stalk extending from the hypothalamus
pituitary gland
it is commonly referred to as the master gland because of the influence it has on secretion of hormones by other endocrine glands
pituitary gland or hypophysis
what are the two divisions of the pituitary gland
posterior pituitary gland (neurohypophysis)
anterior pituitary gland (adenohypophysis)
the neural component of the pituitary gland
posterior pituitary gland (neurohypophysis)
the glandular component of the pituitary gland
anterior pituitary gland (adenohypophysis)
hormone that stimulates the kidneys to promote conservation of water, returning water to the blood rather than eliminating water in the urine
antidiuretic hormone (ADH) or vasopressin
[posterior pituitary gland]
hormone that stimulates mammary glands and uterus for smooth muscle contraction
oxytocin
[posterior pituitary gland]
promotes growth and development in all tissues by increasing protein synthesis and cell division rates
growth hormone (GH) or somatotropin
[anterior pituitary gland]
it also regulates metabolism
it plays an important role in regulating blood nutrient levels after a meal and during period of fasting
it also increases glucose synthesis by the liver which releases glucose into the blood
growth hormone (GH) or somatotropin
[anterior pituitary gland]
hormone that stimulates milk production in mammary glands
it also can enhance progesterone secretion by the ovaries after ovulation
prolactin or mammotropin
[anterior pituitary gland]
hormone that stimulates the thyroid gland to release its hormones
thyroid-stimulating hormone (TSH) / thyrotropin / thyrotropic hormone
[anterior pituitary gland]
hormone that stimulates the parts of the adrenal glands to release its hormones
it increases the secretion of cortisol from the adrenal cortex
adrenocorticotropic hormone (ACTH)
[anterior pituitary gland]
hormone that controls the pigmentation of the skin by stimulating the increased melanin deposition in the skin
melanocyte stimulating hormone (MSH)
[anterior pituitary gland]
two gonadotropic hormones / gonadotropin
follicle-stimulating hormone (FSH)
luteinizing hormone (LH)
stimulates follicle development in the ovaries of women
as the follicles mature, they produce estrogen, and eggs are readies for ovulation
in men, it stimulates sperm development by the testes
follicle stimulating hormone (FSH)
[anterior pituitary gland]
triggers ovulation of an egg from the ovary and causes the ruptured follicle to produce progesterone and some estrogen
in men, it stimulates testosterone production by the interstitial cells of the testes
luteinizing hormone
[anterior pituitary gland]