. On the anatomy of vertebrates [electronic resource] . ta, by dividing beyond the kid-neys into the iliac arteries, fromwhich usually spring both thefemoral, a, and ischiadic branches :the caudal or sacromedian artery,which, in Mutilata and long-tailedquadrupeds, assumes the characterof the continued trunk of the aorta,never distributes arteries to the kid-neys, rarely to the legs, as it does inbirds. After the arteries to the heart( coronaries ) the aortic arch sendsoff those to the head (f carotids)and to the pectoral limbs (4 bra-chials). I use, with Barclay, thelatter term in preference t
. On the anatomy of vertebrates [electronic resource] . ta, by dividing beyond the kid-neys into the iliac arteries, fromwhich usually spring both thefemoral, a, and ischiadic branches :the caudal or sacromedian artery,which, in Mutilata and long-tailedquadrupeds, assumes the characterof the continued trunk of the aorta,never distributes arteries to the kid-neys, rarely to the legs, as it does inbirds. After the arteries to the heart( coronaries ) the aortic arch sendsoff those to the head (f carotids)and to the pectoral limbs (4 bra-chials). I use, with Barclay, thelatter term in preference to those by which Anthropotomydesignates for surgical purposes parts of the same artery, aswhere it passes beneath a clavicle (as Subclavian), or sinksinto the arm-pit (as axillary) before reaching the arm. Theprincipal varieties in the origins of the large primary branchesof the aortic arch, characteristic of Mammalian genera or fami-lies, are given in the order of their complexity in fig. 419. In Tapirine, Equine, Bovine, and most ruminant Ungulates,. Central organs of circulation in Man. cclxvii. ARTERIES OF MAMMALIA. 535 the aorta sends off a large common trunk, A, b (the e ante-rior aorta of Veterinarians), which divides into two brachio-carotids, each subdividing after a longer or shorter course intothe brachial d or d, and the carotid c or cf of its respectiveside: the vertebral artery, v, is given off by the brachial. Thearch of the aorta, diminished after dismissing b, is the posterioraorta of Hippotomy; and, indeed, in this variety the trunk ofthe arterial system appears to bifurcate shortly after its the Rhinoceros the f anterior aorta sends off the two internalthoracics, the two brachials, and a common trunk subdividing intothe two In Auchenia, fig. 419, b, the left brachial, d, 419
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