As animals respire, heat is also released. In birds and mammals, this heat is distributed around the body by the blood and helps to maintain a constant internal temperature.

1 The application of an electric current to the phrenic nerve was attempted as early as 1793 by Hufeland in Göttingen, Germany, two years after Galvani had recorded his observations on "animal ...

All organisms need ATP to live. Respiration is only around 40 per cent efficient. As animals respire, heat is also released. In birds and mammals, this heat is distributed around the body by the ...

A team of scientists have elucidated an ancient mechanism of cellular respiration. To that end, they studied bacteria that feed on the gases carbon dioxide and hydrogen, and turn them into acetic acid ...