The spinal cord ends between the first and second lumbar vertebrae. this area is called the:

The spinal cord ends between the first and second lumbar vertebrae. This area is called the conus medullaris.
In English, this term is translated as 'medullary cone.' It is the lower part of the spinal cord, which is a gathering of nervous tissue and support cells. 

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.