Hormones

They are chemical messangers released form endocrine glands and travel in our blood stream to their target organ. Target organs are xovered in receptors for the hormones to bind to

They specifically release hormones directly into the blood stream

Hormones are slower compared to nerves as they have to travel through the blood stream hoewrer they last for a longer time than nerves

Releases the hormone Thyroxine-the main hormone that controls chemical reactions in the body. If a child does not have enough thyroxine, then growth can be affected

The pancreas produces insulin-a hromone that regulates blood sugar levels

The adrenal glends release adrenaline-the hormone that increases heart rate and rate of respiration

The pituitary gland produces many hormones that control and regulate the other glands (Master gland)

The testes release testosterone- a hormone that causes changes during puberty and a development in muscle tissue

The ovaries release oestrogen and progesterone- hormones that cause changes during puberty such as the starting of the menstrual cycle.

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