The patient is then seized with violent convulsions of a tetanic character; the arms are stretched out, respiration impeded, the muscles are rigid, the body is thrown into opisthotonos, i.e.
By synthesis at a summation of "beats" or of simple contras tions in the compound, or "tetanic," or summed contraction of the skeletal muscles.
The tetanic or summed contractions are more extensive than the simple, both in space and time, and liberate more energy, both as mechanical work and heat.
Morphine and the other opium alkaloids (codeine, narcotine, laudanine, &c.) have two prominent actions - a narcotic followed by a tetanic action.
These bodies stimulate the grey matter in the spinal cord and cause tetanic convulsions.
The chemical changes that accompany activity in the nerve fibre must be very small, for the production of CO 2 is barely measurable, and no production of heat is observable as the result of the most forced tetanic activity.