if you mean bloods then no because they can be found as carbohydrates which is the starch you can also brake down in the stomach which can also be left as chemicals but yes most of the time they are found in the bloods and the white bloods cells and the red bloods cells help defending and carrying the chemicals which are found in the body
3) because during the menstrual cycle the body is already trying to clean out the uterine lining and the old egg is already in that. So having a new egg drop in form the ovary at the end of the cycle makes more sense.
