Is the menstrul system a part of the reproductive system

Yes it is and it only occurs in women. 

Yes it is and it only occurs in women. 

Yes, it very well is a women has to realese an egg to have her period then the cycle starts over during ovulation is the only time a women can get pregnant. this is part of menstration

Yes, it very well is a women has to realese an egg to have her period then the cycle starts over during ovulation is the only time a women can get pregnant. this is part of menstration

Generally travels west to east but often shifts to north and south

Mitochondria is the cell organelle that produced the energy that is needed in the body system in form of atp, that is why it is called the power house of the cell. energy is needed by the living organisms to carry out the activities which sustain life.  if the mitochondria is destroyed atp will not be produced. if the mitochondria is destroyed, energy production will stop and the affected living organism will not have the energy to carry out the necessary life processes; this will lead to the death of the organism.