The chondrioma of a cell is the set of 300 to 800 mitochondria (from 1000 to 3000 in muscle cells, 2500 of which in a parenchymal cell of the liver or, which is a smooth muscle) which constitute up to 25% of the cell mass.
Very numerous in young cells and / or very active, which require a lot of energy (like spermatozoa), mitochondria are organelles because they constitute functional units of the cell: they are the "energy factories". Omnipresent in any animal or plant cell, mitochondria exist even in anucleate blood thrombocytes.
<span>An average human muscle contain between seven hundred and fifty to one thousand mitochondria per cell. Mitochondria is the organelle of the cell that carry out the process of cellular respiration, it takes nutrients from the cells, metabolite them and convert them to energy.</span><span />
