Respiratory organs provide the gas exchange function in which various pathogenic substance and microorganisms causing respiratory diseases can enter the organism and settle in the epithelial surface of lungs and airway tracts.
A large circle of blood circulation in animals begins in the left ventricle of the heart by the largest arterial vessel — the aorta. Initially, it is directed cranially, and then changes direction to caudodorsal, forming a bulge — the arch of the aorta.
Summary. This study was aimed to develop an approach allowing pain behavior estimation of rats with experimental endometriosis. The histological score was design to assess the degree of changes observed in the endometrial tissues.