RESUMO
The vidian nerve was stimulated electrically in the dog and this resulted in a reduced patency of the Eustachian tube. The effect was atropine resistant. This physiological evidence in the dog corresponds to anatomical evidence in man of a parasympathetic, vasodilator nerve bundle passing through the vidian to the sphenopalatine ganglion and then via the pharyngeal nerve to the Eustachian tube mucosa. Additional parasympathetic routes to the tube may exist.
Assuntos
Tuba Auditiva/inervação , Sistema Nervoso Parassimpático/fisiologia , Animais , Atropina/farmacologia , Cães , Estimulação Elétrica , Tuba Auditiva/efeitos dos fármacos , Tuba Auditiva/fisiologia , Nervo Facial/fisiologia , Gânglios Autônomos/fisiologia , Pescoço/inervação , Nariz/inervação , Sistema Nervoso Parassimpático/efeitos dos fármacos , Pressão , Sistema Nervoso Simpático/fisiologiaAssuntos
Orelha Média/metabolismo , Exsudatos e Transudatos/metabolismo , Prostaglandinas/metabolismo , Colo/efeitos dos fármacos , Humanos , Contração Muscular/efeitos dos fármacos , Músculo Liso/efeitos dos fármacos , Otite Média/metabolismo , Prostaglandinas/farmacologia , Prostaglandinas A/metabolismo , Prostaglandinas E/metabolismo , Prostaglandinas F/metabolismo , RadioimunoensaioRESUMO
For the last 50 years, the empirical approach of set length to width ratios for skin flaps has been held valid. Not until Milton's work in 1971 was this concept challenged. This report represents a method where precise, reproducible, and quantitative measurements of skin blood flow can be made using four radioactive nuclide microspheres and measures the blood flow changes in flaps of differing length to width ratios. Conclusions from our data suggest that the cutaneous blood flow in ventrally based, abdominal skin flaps in dogs is independent of base width as measured immediately after outlining and elevation.
