[Age-related dynamics of blood supply and vascular-tissue interrelations in the human pineal body].

Thirty-seven pineal bodies have been studied. They have been obtained from persons of both sex at the age of 18 up to 88 years, perished from accidental causes. Specific volumes of the epiphyseal tissues and vascular constructions of all types have been determined in histological preparations. In young age (up to 40-45 years) the volume of the intraorganic epiphyseal vascular bed is greater, and its blood supply is better than in persons of elderly and old age, when the sclerosing process in the organ occurs at the expense of outgrowth of fibrous elements of the connective tissue carcass. During the pineal body involution, the volume of its intraorganic vascular bed decreases essentially. This results in certain disturbances of blood supply and affects functional activity of the organ.