The correct answer would be the nose and mouth. The cranial portion pertains the head area. So that being the prefix the nose and mouth would be found in the cranial portion of the midsagittal plane, due to the two structures being center of the face would fall upon the midsagittal plane.
The answer to what structures might be found in the cranial portion of the midsagittal plane is the umbilicus and the bladder also you can also find the feet and the ankles, an in the structure you can also find of course the nose and the mouth, even the hand and the feet are included.
