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The renin–angiotensin system ( RAS ), or renin–angiotensin–aldosterone system ( RAAS ), is a hormone system that regulates blood pressure, fluid and electrolyte balance, and systemic vascular resistance. [ 2][ 3] When renal blood flow is reduced, juxtaglomerular cells in the kidneys convert the precursor prorenin (already present in the ...
Endocrine system. The endocrine system[ 1] is a messenger system in an organism comprising feedback loops of hormones that are released by internal glands directly into the circulatory system and that target and regulate distant organs. In vertebrates, the hypothalamus is the neural control center for all endocrine systems.
Adrenaline, also known as epinephrine, is a hormone and medication [ 7][ 8] which is involved in regulating visceral functions (e.g., respiration). [ 7][ 9] It appears as a white microcrystalline granule. [ 10] Adrenaline is normally produced by the adrenal glands and by a small number of neurons in the medulla oblongata. [ 11]
Gonadotropins are released under the control of gonadotropin-releasing hormone (GnRH) from the arcuate nucleus and preoptic area of the hypothalamus. The gonads — testes and ovaries — are the primary target organs for LH and FSH. The gonadotropins affect multiple cell types and elicit multiple responses from the target organs.
The video game crash of 1983 (known in Japan as the Atari shock) [ 1] was a large-scale recession in the video game industry that occurred from 1983 to 1985 in the United States. The crash was attributed to several factors, including market saturation in the number of video game consoles and available games, many of which were of poor quality.
The system of the thyroid hormones T 3 and T 4 [10] T 3 and T 4 are carried in the blood, bound to plasma proteins. This has the effect of increasing the half-life of the hormone and decreasing the rate at which it is taken up by peripheral tissues. There are three main proteins that the two hormones are bound to.
Crash Course is an American game show that premiered on ABC on August 26, 2009. It is hosted by Orlando Jones and Dan Cortese . The series has teams of two competing for a golden steering wheel and $50,000.
Human placental lactogen ( hPL ), also called human chorionic somatomammotropin ( hCS) or human chorionic somatotropin, is a polypeptide placental hormone, the human form of placental lactogen ( chorionic somatomammotropin). Its structure and function are similar to those of human growth hormone. It modifies the metabolic state of the mother ...