Changes

The pars tuberalis is a thin band of endocrine cells around the infundibular stalk. It is dense in '''melatonin''' receptors, and functions to regulate release of reproductive hormones according to season.   

The pars tuberalis is a thin band of endocrine cells around the infundibular stalk. It is dense in '''melatonin''' receptors, and functions to regulate release of reproductive hormones according to season.   

====Pars Distalis====

====Pars Distalis====

The endocrine cells within the pars distalis synthesize, store and release hormones in response releasing and inhibiting factors from the [[Hypothalamus - Anatomy & Physiology|hypothalamus]]. These factors reach the pars distalis in the '''hypophyseal portal system''', which connects capillaries of the median eminence to the capillaries of the pars distalis.

The pars distalis contains five cell types (somatotropes, lactotropes, corticotropes, thyrotropes and gonadotropes).  The endocrine cells within the pars distalis synthesize, store and release six hormones in response releasing and inhibiting factors from the [[Hypothalamus - Anatomy & Physiology|hypothalamus]]. These factors reach the pars distalis in the '''hypophyseal portal system''', which connects capillaries of the median eminence to the capillaries of the pars distalis.

===Pars Intermedia===

===Pars Intermedia===