Adaptive morphogenesis of the adrenal glands of ducks in conditions of hyperthermia

Abstract

Abstract It was found that under conditions of hyperthermia, morphofunctional changes develop in the interrenal part of the adrenal glands, indicating an increase in the functional activity of the gland. The study of ducks on the 5th day of hyperthermia revealed loosening and thickening of the adrenal gland capsule compared to the control. Significant hemodynamic disorders were noted: the phenomena of stasis and erythrocyte sludge in sharply expanded blood capillaries of the adrenal glands. It was found that on the 10th day of hyperthermia, hemodynamic disorders are progressive: the phenomena of sludge and red blood cell stasis are less pronounced, but parenchymal edema and a sharp expansion of sinusoid capillaries persist. Changes in interrenal cells (their high prismatic shape, cytoplasmic vacuolization, apical granularity) are also determined to characterize the high secretory activity of endocrinocytes. The found changes indicate the development of a stress reaction.