Which of the following statements is correct in relation to the endocrine system?

• A

   Non-nutrient chemicals produced by the body in trace amoun ts that act as intercellular messenger are known as hormones.

• B

   Releasing and inh ibitory hormones are  produced  by the pituitary gland.

• C

  Adenoh ypophysis is under direct neural regulation of the hypothalamus.
   

• D

   Organ s in the body like gastrointestinal tract, heart, kidney and liver do not produce any hormones.