endocrine system

• hormones


  chemical molecules relased directly in blood
• hormones control things in organs and cells that need constant adjustments
• hormones are produced in various glands called endocrine glands and hormones tend to have longer lasting effects
• pituitary gland


  produces mant homrones that regulate the body conditions

  'master gland'

  hormones act on other glands directing them to release hromones that bring about change
• Thyroid


  produces thyroxine which helps regulating heart rate, metabolism and temp
• ovaries (women)


  produces oestrogen which is involved in menstruation cycle
• adrenal gland 


  produces adrenaline which is used to prepare the body for physical harm like a fight
• pancreas 


  produces insulin which is used to regulate the blood glucose levels
• Endocrine system


  System in which hormones are released through the body