Anatomical ontogeny. B. Man. I. A Study of the coronary arteries

Abstract

SEVEN FIGURESThe coronary arteries, like the weight, the form, and the histology of the heart, undergo continuous alteration with age. Concerning their macroscopical visible changes Gross ('21) has published detailed investigations. He found that the blood supply to the two ventricles was equal at birth, but that after the first decade the left ventricle was favored. Its supply, he thought, was definitely greater after the third decade, and after the fifth decade, the preponderance in its favor was striking. Consequently, anemia of the right side of the heart took place, which was for the most part relative, the difference depending not so much on the occurrence of degenerative processes as on, diminution in growth, at least in comparison with the left ventricle. He also pointed out the increasing thickness of the left ventricle with growth in comparison with the right. Campbell ('28) repeated Gross's investigations, using the same method, and believed he had verified Gross's results. Gross's contentions did not, as a matter of fact, remain unchallenged. Spalteholz ('24) stated that in his extensive researches he had not observed such changes. Whitten ('30), on the basis of a study of hearts which he treated by the method of corrosion, a method the

Coronary Arteries in Fetuses, Infants, and Juveniles

“…The absence of lesions of the internal elastic membrane and of the intima in fetuses up to the age of 8 SUMMARY No lesions of the internal elastic membrane or intima were demonstrated in the coronary arteries of fetuses 33 to 9 months of age.…”

Vascular pattern of myocardium of right ventricle of human heart.

“…Gross, 1921;Campbell, 1929;Whitten, 1930a, b;Ehrich, de la Chapelle, and Cohn, 1931;Gross and Kugel, 1933), the arterial pattern of the myocardium of the right ventricle of the human heart has, in the past, received little attention. More recently, Mitchell and Schwartz (1965) and Fulton (1965) have published radiographs of the blood supply of both ventricles, but except for Fulton's description of the anastomotic vessels these investigators did not comment on the normal detailed vascular anatomy of the right ventricle.…”

Cross-sectional area measurement of the coronary arteries using CT angiography at the level of the bifurcation: is there a relationship?

“…Some other studies found a slight increase in coronary arteries with age (15,16), while one study reported that coronary artery size decreased with age and suggested that it may result from the decreased response to nitroglycerine, i.e., age-related decrease in vasodilation of the arteries (17).…”