176 



MOUTH DIGESTION. 



versa; so that it has been suggested that it would be better to 

 apply the terms mucous and albuminous to the cells, rather than 

 to the glands. 



Secretory Nerves of the Salivary Glands. The relation existing 



D 



FIG. 99. Parotid gland of the rabbit in a fresh state, showing portions of the 

 secreting tubules: A, in a resting condition; B, after secretion caused by pilo- 

 carpin ; C, after stronger secretion pilocarpin and stimulation of sympathetic ; D, 

 after long-continued stimulation of sympathetic (after Langley). 



between nerves and the secretion of saliva has been more carefully 

 investigated in dogs and rabbits than in man, and it is to the 

 result of these investigations that we shall especially refer. 



Con nee- . 

 tive tissue. 



Gland-cell -, 

 of acinus. 



-- Intralobu- 

 lar duct. 



FIG. 100. Section from parotid gland of man (Bohm and Davidoff). 



The nervous supply of the parotid gland is derived from : (1) 

 The glossopharyngeal nerve, through its tympanic branch of the 

 nerve of Jacobson, the small superficial petrosal nerve, the otic 



