Student Portal Britannica is the ultimate student resource for key school subjects like history, government, literature, and more.Demystified Videos In Demystified, Britannica has all the answers to your burning questions.This Time in History In these videos, find out what happened this month (or any month!) in history.#WTFact Videos In #WTFact Britannica shares some of the most bizarre facts we can find.Britannica Classics Check out these retro videos from Encyclopedia Britannica’s archives.Britannica Explains In these videos, Britannica explains a variety of topics and answers frequently asked questions.Important hormones released into the bloodstream include ADH (anti-diuretic hormone), adrenaline and insulin. The body produces a range of different chemical hormones that travel in the bloodstream and affect a number of different organs or cells in the body. These hormones can also act on other glands to stimulate the release of different types of hormones and bring about effects. It secretes several hormones into the blood in response to the body's condition, such as blood water levels. The pituitary gland in the brain is known as a 'master gland'. There are important differences between nervous and hormonal control. Hormones can control the body, and the effects are much slower than the nervous system, but they last for longer.
Once a hormone has been used, it is destroyed by the liver. One of its target organs is the heart, where it increases the heart rate. An example of this is the release of the hormone adrenaline, which is released by the adrenal gland. Human endocrine system Hormones and nervesĪ hormone is a chemical substance, produced by a gland and carried in the bloodstream, which alters the activity of specific target organs.
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