Features of the pitutary-adrenal system.
Main features of pituitary-adrenal system are that the hypothalamus communicates with the
pituitary gland causing it to release ACTH. This hormone is then detected in the bloodstream
by the adrenal cortex, which then releases corticosteroids such as cortisol and
corticosterone. The corticosteroids have a range of effects such as causing the liver to
Features of the sympathomedullary system.
Main features of the Sympathomedullary pathway are that the hypothalamus activates the
sympathetic nervous system, which then stimulates the adrenal medulla to release the
hormones adrenaline and noradrenaline into the bloodstream. This gets the body ready for
fight-or-flight, eg increase blood pressure and heart rate.