Histological Study on the Fibrous Architecture of the Adrenal Gland During Postnatal Development in Buffalo

Abstract

The study was conducted on the adrenal glands of 29 buffaloes ranging from day old to one year of age. The adrenal gland was fully
differentiated into cortex and medulla in the day old buffalo calf and was completely surrounded by a dense fibrous capsule at this
stage. The capsule consisted of outer layer of loose connective tissue and inner layer of thick collagen fibres. The connective tissue
trabeculae made up of collagen and reticular fibres arose from the inner aspect of capsule and infiltrated the cortical parenchyma of
the gland. The reticular fibres dominated in the inner aspect of the capsule and the proportion of reticular fibres was more in the zona
glomerulosa and outer zone of medulla, however, elastic fibres were not observed in any part of the gland up to one year of age. The
average thickness of the capsule increased with progression of age which was due to increase in the density of collagen fibres especially
in the inner zone of capsule.