[Solved] In primary hypoadrenalism, you would expect A) Decreased circulating ACTH B) Decreased CRH C) Increased skin pigmentation due to excess CRH D) Increased skin pigmentation due to excess MSH as a by-product of ACTH secretion E) Normal levels of aldosterone Microscopic Structure: The detailed architecture of an object that is too small to be seen with the naked eye, often requiring a microscope for examination. Plane of Section: A specific direction through a body or structure to expose a surface for study. Sagittal: Pertaining to a plane that divides the body into right and left portions. Internal Structures: The organs, bones, and other bodily elements that exist within the body and contribute to its complex functionality.