Cholinergic innervation of the tongue of the one humped camel, Camelus dromedarius.

ABSTRACT

Distribution of adrenergic and cholinergic nerve profiles in the tongue of camel has been studied by histochemical methods. The tongue is richly innervated by cholinergic nerve profiles as is evidenced by the presence of numerous nerve fibres at different levels. There is noted strong cholinesterase positive reaction close to the lateral border of the circumvallate papillae (in the region of the taste buds) and the upper border of the fungiform papillae. Numerous nerve fibres have been observed in the connective tissue core of all the lingual papillae. Adrenergic nerve terminals could not be observed in the taste buds though numerous adrenergic nerve fibres could be seen in and around the blood vessels. Rich cholinergic innervation of the blood vessels has also been noted in the tongue.