In the electron transport chain, electrons move through the cytochromes in the following order: b566, b562, c1, c, a, and a3 (see Figure 16-19). The various cytochromes have slightly different heme groups and axial ligands, which generate different environments for the Fe ion (Figure 16-21).
On average, a woman has her period from three to seven days and the average woman menstruates from age 13 until age 51. That means the average woman endures some 456 total periods over 38 years, or roughly 2,280 days with her period -- 6.25 years of her life. Midol. You can only take up to six caplets a day, and cramps usually persist for two days. There are 40 caplets per package of Midol, which costs $8.99 at Walgreens.
An average period can last anywhere from three to five days; it can be shorter or longer than this, but itâs typically no longer than 7 days or a week. A textbook menstrual cycle is 28 days (from one period to the next; this is the average length of a period or menstrual cycle). However, it is very common for adult women to have menstrual cycles that range anywhere 21 to 35 days.