endocrine/hormones

• the endocrine system has organs known as glands, which secrete chemical messengers called hormones
• hormones method of transport is through the bloodstream (hormones are secreted into the bloodstream)
• hormones: chemical messengers
• hormones can affect the whole body or only certain organs
• hormones target and attach to specific receptors on the cell (which makes up organs)
• 1. stimulus triggers endocrine gland, releases hormone
  2. hormone released into the bloodstream
  3. receptors on target cell binds with hormones (receptors can only bind to things its specific for)
  4. cells on that organ initiate response (to the original stimulus)
• receptors detect stimuli
• interneurons are the same as relay neurons
• the speed of the action in the endocrine system is slow
• the nature of message in the endocrine system is chemical messengers
• the duration of the response in the endocrine system is seconds to days
• the area of the endocrine system response is widespread
• the endocrine system controls things like growth