. Bulletin. Ethnology. Figure 3.—Lung and aorta. Left: Incomplete horizontal fissure of right lung. Right: Origin of truncus brachiocephalicus and first left carotid artery from a common branch of the aorta. CIRCULATORY SYSTEM Heart.—Henckel and Skewes (1943) give the following information concerning the weight of the heart: Table 4.—Weight of the heart in Chilean males {in grams) (from Henckel and Skewes, 1943) Age (years) Absolute weight Relative weight M m(M) M ni(M) 20-30 - 338. 27 31-40 - .11 41-50 - .17
. Bulletin. Ethnology. Figure 3.—Lung and aorta. Left: Incomplete horizontal fissure of right lung. Right: Origin of truncus brachiocephalicus and first left carotid artery from a common branch of the aorta. CIRCULATORY SYSTEM Heart.—Henckel and Skewes (1943) give the following information concerning the weight of the heart: Table 4.—Weight of the heart in Chilean males {in grams) (from Henckel and Skewes, 1943) Age (years) Absolute weight Relative weight M m(M) M ni(M) 20-30 - 338. 27 31-40 - .11 41-50 - .17 61-60 .19 61 SBd over . ._ .32 Arch of aorta (arcus aortae).—According to N. Munoz (1933), among the different types of aortic arch, one is particularly frequent in Chileans: the brachiocephalic trunk (truncus brachiocephahcus) and the first left carotid (arteria carotis communis sinistra) originate from a common branch of the arch of aorta (fig. 3, right). This for- mation has been verified in 25 percent of 300 female corpses. In 8 percent of the same group it was observed that the left vertebral. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Smithsonian Institution. Bureau of American Ethnology. Washington : G. P. O.
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