The endocrine system is made up of several glands that secrete hormones into the bloodstream. The blood carries the hormones around the body and each hormone acts on a target organ, which produces an effect.
Compared to the nervous system, the effects of hormones are much slower but tend to be more long-lasting.
|Pituitary||Many hormones, including anti-diuretic hormone (ADH), follicle-stimulating hormone (FSH) and luteinising hormone (LH)|
|Pancreas||Insulin and glucagon|
|Ovary||Oestrogen and progesterone|
The pituitary gland, located in the brain, is often referred to as a ‘master gland’ because it can secrete many hormones into the blood. These hormones act on other glands, causing other hormones to be released. So the pituitary gland can trigger a range of effects in the body.