Coordinating centers in the hypothalamus regulate the activities of the nervous and endocrine system by all of the following except:
a. autonomic neurons that directly control the endocrine cells of the adrenal medulla
b. acting as an endocrine organ itself and releasing hormones
c. a modified positive feedback loop involving the pars intermedia of the pituitary gland
d. secreting inhibiting hormones that inhibit the production and release of hormones from the anterior pituitary gland
e. secreting releasing hormones that stimulate the production and release of hormones from the anterior pituitary gland