Innervation of the diaphragm
On the basis of studies carried out on dogs, AA Troitskaya (Vesti. Khir. And Pogr. Obl., 1926, No. 16) found that none of the 6 lower intercostal nerves in dogs, apparently, gives motor branches to the diaphragm , the muscles of which are supplied with motor nerves exclusively from n. phrenicus; therefore cutting n. phrenici entails complete paralysis and atrophy of the phrenic muscle on the corresponding side (this paralysis in a dog is not fatal).
S. V.
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