Anterior Pituitary EM

An electron micrograph of the anterior pituitary allows you to distinguish the cells types that appear as acidophils and basophils. The most easily recognized cells in this type of image are the somatotrophs, which are the most ubiquitous cells of the anterior pituitary and have a distinct appearance because they have abundant secretory granules. Thyrotrophs also have many granules, but they tend to be limited more to the periphery of the cells. The gonadotrophs are larger and have granules of different sizes although there are typically fewer of these granules than in the somatotrophs and thyrotrophs. Finally, corticotrophs have the least abundant granules. Mammotrophs are not present in this image. Note also the capillary that is present. How would you characterize the endothelium of this capillary? Why might this be functionally important considering its location?