Effect of 5,7-dihydroxytryptamine on Auerbach's plexus in the ileum of guinea-pig.

Action of 100 mg/kg of 5,7-dihydroxytryptamine on Auerbach's plexus in the ileum of the guinea-pig has been studied using Falck and Hillarp's formaldehyde condensation technique. The drug caused partial disappearance of the adrenergic nerve profiles initially but after 10 days of treatment all the lost fibers reappeared.

Fluorescence histochemical study of Aurbach's plexus of the ileum of 6-hydroxydopamine-treated guinea pig.

In the present investigation the action of 6-hydroxydopamine (6-OHDA) on Auerbach's plexus of the ileum of the guinea pig has been studied with Falck and Hillarp's histochemical technique. A singel dose of 15-25 mg/kg of 6-OHDA causes degeneration of some of the adrenergic nerve fibres after 6 h of treatment. 200-250 mg/kg of 6-OHDA is responsible for the total disappearance of nerve fibres in the ganglia and internodal strands within 24 h.

Anatomical and neurohistological observations on the tongue of 60 mm embryo of opossum, Didetphis marsupialis.

The anatomy, histology and innervation of the tongue of 60 mm embryo of opossum, Didelphis marsupialis have been described. The tongue measures 13 mm in length and 4.5 mm in breadth.

Anatomical and neurohistological observations on the heart of the rose ringed parakeet, Psittacula krameri.

Anatomy, histology and innervation of the heart of the rose ringed parakeet, Psittacula krameri have been studied in the present investigation. The sinuatrial node is found to be well-developed. It is located towards the right side of the cephalic end of the interatrial septum and composed of a few nucleated cells and a large fibrous mass.

Anatomical and neurohistological observations on the tongue of the India goat, Capra aegagrus.

The anatomy and neurohistology of the tongue of the Indian goat, Capra aegagrus, have been described. The apex linguae is notched in the centre. The foramen caecum is found to be absent.

Anatomical and neurohistological observations on the heart of the spiny lizard, Uromastix hardwickii.

Anatomy, histology and innervation of the heart of spiny lizard, U. hardwickii have been described. The heart is typically reptilian and comprises four chambers: sinus venosus, two atria and a ventricle.

Anatomical and neurohistological observation of the heart of the jungle bush quail, Perdicula asiatica (Latham.).

Anatomy, histology and innervation of the heart of the jungle bush quail, Perdicula asiatica have been described. The cardiac conducting system is well developed except the atrioventricular node. The sinuatrial node is located at the cephalic end of the interatrial septum and comprised of a large number of specialised muscle fibres enclosing a few small nodal arteries.