The option that is not a criteria of chromophiles of pars distalis is b. They are formed by acidophils and basophils
Chromophiles of the pars distalis are not formed by both acidophils and basophils. They are exclusively composed of acidophils. Acidophils include cells such as somatotropes and lactotropes, which secrete growth hormone (GH) and prolactin, respectively. On the other hand, basophils, which are found in the pars distalis, make up another category called chromophobes, not chromophiles.
So, while chromophiles constitute about 50% of the cells in the pars distalis, the statement that they are formed by both acidophils and basophils is incorrect. Chromophiles are specifically formed by acidophils, distinguishing them from chromophobes in the anterior pituitary.
Complete question:
All of the following are criteria of chromophiles of pars distalis, except:
Select one:
a. They form 50% of the cells of pars distalis b. They are formed by acidophils and basophils
c. They have few granules seen only by E.M
d. They are larger than chromophobes.