The endocrine system

• Function


  -is to regulate cell and organ activity within the body and control vital physiology processes in the body.

  - Is to release hormones/chemical messengers from glands into the bloodstream which then binds to receptor sites to regulate mood and behaviour.
• Glands 


  Pineal gland: is located in the brain. It secretes melatonin which regulates 24 hour sleep cycle.

  Adrenal medulla gland: located above kidneys. It secretes adrenaline and noradrenaline during acute stress.

  Adrenal Cortex: is located above the kidneys on the outer part of the adrenal gland which secretes cortisol during acute stress.
• Glands 


  -Pituitary gland is located in the brain and is considered the master gland as it secretes many hormones to other glands to secrete that hormone.

  -Pituitary anterior is located at the front of the pituitary gland. LH stimulates the testes to secrete testosterone and ovaries to secrete Oestrogen. It secretes adrenocorticotropic hormone stimulate adrenal cortex.

  -Pituitary Posterior is located at the back of the pituitary gland and secretes oxytocin and antidiuretic hormone.