Abbildungen der Seite
PDF
[merged small][ocr errors]
[ocr errors]
[ocr errors]

extended in broken winded horses. The heart is a noble part,

whose shape and appearance is well known to all. It is composed of fibres that run in a spiral direétion ; as also of transverse, longitudinal, and straight fibres: by which means it ačts as a muscle, and is the principal organ in the circulation of the blood. It has two cavities near each other, whereof one is calied the right venticle, and the other the left. The pulmonic artery, which distributes the blood to the lungs, proceeds from the right ventricle, which is the largest and thinnest. The great artery which carries the blood to all the parts of the body, arises from the left ventricle. Upon the upper part of each ventricle there is another cavity called the auricle. The vena cava, or great vein which brings the blood from all parts of the body, is joined to the right auricle; and the pulmonary vein which brings the blood back from the lungs, is joined to the left anricle. The auricles, like the ventricles, are set one against another. In the

- inward

[ocr errors][merged small][merged small][ocr errors][ocr errors][ocr errors][merged small][ocr errors]
[ocr errors][merged small][merged small][ocr errors][ocr errors][ocr errors]
[ocr errors][merged small][merged small][ocr errors][ocr errors][ocr errors][merged small][ocr errors][ocr errors][merged small][ocr errors][merged small]
[merged small][ocr errors][ocr errors][ocr errors][ocr errors][ocr errors][ocr errors][ocr errors][ocr errors]
« ZurückWeiter »