18/08/2026
Mitochondria (single = mitochondrion) are often referred to as the powerhouses of the cell. They're responsible for most of the cell's ATP production. ATP has been called the energy currency of the cell. Mitochondria are tiny (less than 3 micrometres), but boy do they pack a punch! Every cell type in the body has mitochondria except red blood cells. Heart muscle needs constant energy to keep beating and is often thought of has having the most mitochondria - some 5,000 per cell making up to 40% of the mass of the cell. Liver cells have around 2,500 mitochondria and muscle cells around 1,000. Brain cells can have many thousands of mitochondria because of the length of their axons and their complex inter-connectivity. All in all, your body has around 100,000 trillion mitochondria and about 2 billion mitochondria are made in the body each and every second. To read more, click the link below!
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