List of human endocrine organs and actions - Biblioteka.sk

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List of human endocrine organs and actions
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Hypothalamic-pituitary axis

Endocrine glands in the human head and neck and their hormones

Hypothalamus

Secreted hormone Abbreviation Produced by Effect
Thyrotropin-releasing hormone TRH Parvocellular neurosecretory neurons Stimulate thyroid-stimulating hormone (TSH) release from anterior pituitary (primarily)
Dopamine
(Prolactin-inhibiting hormone)
DA or PIH Dopamine neurons of the arcuate nucleus Inhibit prolactin released from anterior pituitary
Growth hormone-releasing hormone GHRH Neuroendocrine neurons of the Arcuate nucleus Stimulate Growth hormone (GH) release from anterior pituitary
Somatostatin
(growth hormone-inhibiting hormone)
SS, GHIH, or SRIF Neuroendocrine cells of the Periventricular nucleus Inhibit Growth hormone release from anterior pituitary
Inhibit thyroid-stimulating hormone (TSH) release from anterior pituitary
Gonadotropin-releasing hormone GnRH or LHRH Neuroendocrine cells of the Preoptic area Stimulate follicle-stimulating hormone (FSH) release from anterior pituitary
Stimulate luteinizing hormone (LH) release from anterior pituitary
Corticotropin-releasing hormone CRH or CRF Parvocellular neurosecretory neurons of the Paraventricular nucleus Stimulate adrenocorticotropic hormone (ACTH) release from anterior pituitary
Oxytocin OX or OXT Magnocellular neurosecretory cells In females: uterine contraction during birthing, lactation (letdown reflex) when nursing
Vasopressin
(antidiuretic hormone)
ADH or AVP or VP Parvocellular neurosecretory neurons, Magnocellular neurosecretory neurons of the Paraventricular nucleus and Supraoptic nucleus Increases water permeability in the distal convoluted tubule and collecting duct of nephrons, thus promoting water reabsorption and increasing blood volume

Pineal body (epiphysis)

Secreted hormone From cells Effect
Melatonin Pinealocytes Antioxidant
Monitors the circadian rhythm including induction of drowsiness and lowering of the core body temperature

Pituitary gland (hypophysis)

The pituitary gland (or hypophysis) is an endocrine gland about the size of a pea and weighing 0.5 grams (0.018 oz) in humans. It is a protrusion off the bottom of the hypothalamus at the base of the brain, and rests in a small, bony cavity (sella turcica) covered by a dural fold (diaphragma sellae). The pituitary is functionally connected to the hypothalamus by the median eminence via a small tube called the infundibular stem or pituitary stalk.[1] The anterior pituitary (adenohypophysis) is connected to the hypothalamus via the hypothalamo–hypophyseal portal vessels, which allows for quicker and more efficient communication between the hypothalamus and the pituitary.[2]

Anterior pituitary lobe (adenohypophysis)

Secreted hormone Abbreviation From cells Effect
Growth hormone
(somatotropin)
GH Somatotrophs Stimulates growth and cell reproduction
Stimulates Insulin-like growth factor 1 release from liver
Thyroid-stimulating hormone
(thyrotropin)
TSH Thyrotropes Stimulates thyroxine (T4) and triiodothyronine (T3) synthesis and release from thyroid gland
Stimulates iodine absorption by thyroid gland
Adrenocorticotropic hormone
(corticotropin)
ACTH Corticotrophs Stimulates corticosteroid (glucocorticoid and mineralcorticoid) and androgen synthesis and release from adrenocortical cells
Beta-endorphin Corticotrophs Inhibits perception of pain
Follicle-stimulating hormone FSH Gonadotrophs In females: Stimulates maturation of ovarian follicles in ovary
In males: Stimulates maturation of seminiferous tubules
In males: Stimulates spermatogenesis
In males: Stimulates production of androgen-binding protein from Sertoli cells of the testes
Luteinizing hormone LH Gonadotrophs In females: Stimulates ovulation
In females: Stimulates formation of corpus luteum
In males: Stimulates testosterone synthesis from Leydig cells (interstitial cells)
Prolactin PRL Lactotrophs Stimulates milk synthesis and release from mammary glands
Mediates sexual gratification
Melanocyte-stimulating hormone MSH Melanotropes in the Pars intermedia of the Anterior Pituitary Stimulates melanin synthesis and release from skin/hair melanocytes

Posterior pituitary lobe (neurohypophysis)

Stored hormone Abbreviation From cells Effect
Oxytocin OX or OXT Magnocellular neurosecretory cells In females: uterine contraction during birthing, lactation (letdown reflex) when nursing
Vasopressin
(antidiuretic hormone)
ADH or AVP Parvocellular neurosecretory neurons Increases water permeability in the distal convoluted tubule and collecting duct of nephrons, thus promoting water reabsorption and increasing blood volume

Oxytocin and anti-diuretic hormone are not secreted in the posterior lobe, merely stored.

Thyroid

Secreted hormone Abbreviation From cells Effect
Triiodothyronine T3 Thyroid epithelial cell (More potent form of thyroid hormone)
Stimulates body oxygen and energy consumption, thereby increasing the basal metabolic rate
Stimulates RNA polymerase I and II, thereby promoting protein synthesis
Thyroxine
(tetraiodothyronine)
T4 Thyroid epithelial cell's (Less active form of thyroid hormone)
(Acts as a prohormone to triiodothyronine)
Stimulates body oxygen and energy consumption, thereby increasing the basal metabolic rate
Stimulates RNA polymerase I and II, thereby promoting protein synthesis
Calcitonin Parafollicular cell's Stimulates osteoblasts and thus bone construction
Inhibits Ca2+ release from bone, thereby reducing blood Ca2+

Digestive system

Stomach

Secreted hormone Abbreviation From cells Effect
Gastrin (Primarily) G cells Secretion of gastric acid by parietal cells
Ghrelin P/D1 cells Stimulate appetite.
Neuropeptide Y NPY Increased food intake and decreased physical activity. It can be associated with obesity.
Somatostatin D cells Suppress release of gastrin, cholecystokinin (CCK), secretin, motilin, vasoactive intestinal peptide (VIP), gastric inhibitory polypeptide (GIP), enteroglucagon

Lowers rate of gastric emptying

Reduces smooth muscle contractions and blood flow within the intestine.[3]

Histamine ECL cells stimulate gastric acid secretion
Endothelin X cells Smooth muscle contraction of stomach[4]

Duodenum (small intestine)

Secreted hormone From cells Effect
Secretin S cells Secretion of bicarbonate from liver, pancreas and duodenal Brunner's glands

Enhances effects of cholecystokinin, stops production of gastric juice

Cholecystokinin I cells Release of digestive enzymes from pancreas

Release of bile from gallbladder, hunger suppressant

Liver

Secreted hormone Abbreviation From cells Effect
Insulin-like growth factor (or somatomedin) (Primarily) IGF Hepatocytes insulin-like effects

regulate cell growth and development

Angiotensinogen and angiotensin Hepatocytes vasoconstriction

release of aldosterone from adrenal cortex dipsogen.

Thrombopoietin THPO Hepatocytes stimulates megakaryocytes to produce platelets[5]
Hepcidin Hepatocytes inhibits intestinal iron absorption and iron release by macrophages

Pancreas

The pancreas is a heterocrine gland as it functions both as an endocrine and as an exocrine gland.[6]

Secreted hormone From cells Effect
Insulin (Primarily) β Islet cells Intake of glucose, glycogenesis and glycolysis in liver and muscle from blood.

Intake of lipids and synthesis of triglycerides in adipocytes. Other anabolic effects

Glucagon (Also Primarily) α Islet cells Glycogenolysis and gluconeogenesis in liver.

Increases blood glucose level.

Somatostatin δ Islet cells Inhibit release of insulin[7]

Inhibit release of glucagon[7] Suppress the exocrine secretory action of pancreas.

Pancreatic polypeptide PP cells Self regulate the pancreas secretion activities and effect the hepatic glycogen levels.

Kidney

Secreted hormone From cells Effect
Renin (Primarily) Juxtaglomerular cells Activates the renin–angiotensin system by producing angiotensin I of angiotensinogen
Erythropoietin (EPO) Extraglomerular mesangial cells Stimulate erythrocyte production
Calcitriol (1,25-dihydroxyvitamin D3) Proximal tubule cells Active form of vitamin D3

Increase absorption of calcium and phosphate from gastrointestinal tract and kidneys inhibit release of PTH

Thrombopoietin stimulates megakaryocytes to produce platelets[5]

Adrenal glands

Adrenal cortex

Secreted hormone From cells Effect
Glucocorticoids (chiefly cortisol) zona fasciculata and zona reticularis cells Stimulates gluconeogenesis
Stimulates fat breakdown in adipose tissue
Inhibits protein synthesis
Inhibits glucose uptake in muscle and adipose tissue
Inhibits immunological responses (immunosuppressive)
Inhibits inflammatory responses (anti-inflammatory)
Mineralocorticoids (chiefly aldosterone) Zona glomerulosa cells Stimulates active sodium reabsorption in kidneys
Stimulates passive water reabsorption in kidneys, thus increasing blood volume and blood pressure
Stimulates potassium and H+ secretion into nephron of kidney and subsequent excretion
Androgens (including DHEA and testosterone) Zona fasciculata and Zona reticularis cells In males: Relatively small effect compared to androgens from testes
In females: masculinizing effects

Adrenal medulla

Secreted hormone From cells Effect
Adrenaline (epinephrine) (Primarily) Chromaffin cells Fight-or-flight response:
Noradrenaline (norepinephrine) Chromaffin cells Fight-or-flight response:
Dopamine Chromaffin cells Increase heart rate and blood pressure
Enkephalin Chromaffin cells Regulate pain

Reproductive

Testes

Secreted hormone From cells Effect
Androgens (chiefly testosterone) Leydig cells Anabolic: growth of muscle mass and strength, increased bone density, growth and strength,

Virilizing: maturation of sex organs, formation of scrotum, deepening of voice, growth of beard and axillary hair.

Estradiol Sertoli cells Prevent apoptosis of germ cells[8]
Inhibin Sertoli cells Inhibit production of FSH

Ovarian follicle and corpus luteum

Secreted hormone From cells Effect
Progesterone Granulosa cells, theca cells Support pregnancy:[9]

Other:

Anti-inflammatory

Androstenedione Theca cells Substrate for estrogen
Estrogens (mainly estradiol) Granulosa cells Structural: Zdroj:https://en.wikipedia.org?pojem=List_of_human_endocrine_organs_and_actions
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