The umbilical region, in the anatomists' abdominal pelvic nine-region scheme, is the area surrounding the umbilicus and it is placed approximately on middle of distance between xiphoid process and pubic symphysis (navel).
Answer:It is necessary because you need to understand other people's reasoning and answers and compare them to yours to see if both you understand.
Explanation:
The lining of the uterus, and the fallopian tube.
It would have to be middle childhood
