1.   Indeed, some animal tissues still practise anaerobic respiration - including muscle fibres, for short periods.

2.   Myoglobin, a protein similar to haemoglobin in red blood cells, acts as a store for oxygen within the muscle fibres.

3.   The muscle fibres of white meat, by contrast, have a low content of myoglobin and mitochondria.

4.   In cases with massive deposits, there were degenerative changes in muscle fibres, with muscle tissue being replaced by amyloid.

5.   By elongating the muscle fibres, you allow the blood to flow freely through.