The Adrenal Gland in Reptilia: PART 1. STRUCTURE

摘要: Publisher Summary This chapter discusses the morphology, histology, seasonal changes, and physiology of adrenal gland in reptilia. The embryonic origins reptilian are as other vertebrate groups; cortical tissue is derived from a proliferation cells dorsal peritoneal epithelium lining coelom, whereas chromaffin originates anlagen prevertebral sympathetic plexuses. Unlike amphibians, where has form discrete or sometimes scattered lying on mesonephros often embedded kidney tissue, glands reptiles usually paired, elongated encapsulated bodies closely associated with main blood vessels, adjoining gonads. They, therefore, more resemble homoiothermic vertebrates, rather than poikilotherms. Reptilia completely enclosed thin connective capsule consisting collagenous, reticular, elastic fibers surrounding inner mass cells. latter organized into loosely connected network cords, which generally orientated, Amphibia, longitudinally along length gland. however, pronounced islets intermixed cords similar to avian pattern. vary considerably, both their relative proportions, pattern distribution throughout