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Fig. 2 | The Journal of Headache and Pain

Fig. 2

From: Measurement and implications of the distance between the sphenopalatine ganglion and nasal mucosa: a neuroimaging study

Fig. 2

Illustration of the relation between the nasal cavity and the sphenopalatine fossa (axial plane). In order to reach the SPG, a drug applied intranasally over the sphenopalatine foramen will have to diffuse through mucosa, the sphenopalatine foramen, which is packed with neuro-vascular structures and connective tissue, and the fat tissue filling the sphenopalatine fossa. SPF: sphenopalatine foramen; SPG: sphenopalatine ganglion

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