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Endocrine system (Endocrine glands (Anterior pituitary (•growth hormone-…

- - - - •messenger molecule- neurotransmitter
        •site of messenger action- from axon terminal to synapse, binds with nearby target cells
        •types of target cells- 3 types of muscle (skeletal, smooth, and cardiac) and glands
        •time to onset of action- very short, milliseconds
        •duration of action- very short, milliseconds but can last longer
    - - •messenger molecule-hormone
        •site of messenger action- near or far target cells
        •types of target cells- various target cells throughout the body
        •time to onset of action- varies, not as fast as nervous, seconds/hours/days
        •duration of action- varies, hours/days