Endocrine System

• Endocrine definition

  Network of glands throughout the body that secrete hormones, working alongside the nervous system. Works by regulating physiological processes by releasing hormones into the bloodstream.
• When glands are stimulated, hormones are secreted into the bloodstream. Hormones affect cells in several organs throughout the body. For example, the thyroid glands produces the hormone thyroxine.
• hormones definition

  hormones are chemical substances that act like messenger molecules in the body.
• differences between nervous system and endocrine system

  nervous system = short term, fast response, electrical impulses via neurones

  hormonal system = long term, slower response, chemical messengers via blood.
• What is the gland associated with adrenaline/noradrenaline?

  Adrenal gland
• What is the function of adrenaline/noradrenaline?

  Prepares the body for fight or flight
• What is the gland associated with ATCH?

  Pituitary gland
• What is the function of ATCH?

  Triggers release of all needed hormones
• What is the gland associated with thyroxine?

  Thyroid gland
• What is the function of thyroxine?

  Increases the body’s metabolic rate
• What is the gland associated with oestrogen/progesterone?

  Ovaries
• What is the function of oestrogen/progesterone?

  Production of egg and menstrual cycle
• What is the gland associated with testosterone?

  Testes
• What is the function of testosterone?

  Development of male characteristics