Anatomy of the arteries of the human body : descriptive and surgical, with the descriptive anatomy of the heart / by John Hatch Power ; with illustrations by B. Wills Richardson.

  • Power, John H. (John Hatch), 1806-1863.
Date:
1860
Catalogue details

Licence: Public Domain Mark

Credit: Anatomy of the arteries of the human body : descriptive and surgical, with the descriptive anatomy of the heart / by John Hatch Power ; with illustrations by B. Wills Richardson. Source: Wellcome Collection.

Provider: This material has been provided by the National Library of Medicine (U.S.), through the Medical Heritage Library. The original may be consulted at the National Library of Medicine (U.S.)

    23/404
    ing partial investments for the two venae cavse and the four pulmonary veins. These two portions of the serous layer, viz., that lining the fibrous layer of the pericar- dium, and that lining the exterior of the heart itself, are perfectly continuous with each other, thus constitut- ing a completely shut sac, so that the vessels going to, or issuing from the heart, do not perforate the serous membrane, but receive coverings more or less perfect from it. Nine openings have been enumerated in the fibrous layer of the pericardium, viz., one for the aorta, two for the right and left branches of the pulmonary artery, four for the four pulmonary veins, and two for the superior and inferior vense cavse. In the foetus there i3 another for the ductus arteriosus. Strictly speaking these are not openings in the fibrous layer of the pericar- dium, for this structure becomes incorporated with the external tunic of the vessels where they come in contact with it. When the pericardium has been opened, the following parts will be exposed :—the anterior superior surface of the heart, the two vente cavse, the aorta, the pulmonary artery, the right auricular appendix and a portion of the auricle, and the tip of the left auricular appendix. The left auricle is concealed chiefly by the aorta and pulmonary artery. GENERAL DESCRIPTION OF THE HEART. The Heart is a hollow muscular organ of a somewhat conical form, consisting of four chambers, grouped together so as to form an individual mass ; two of these are called the auricles, the other two the ventricles. The apex of the heart is formed (in the adult) by the extremity of the left ventricle ; and looks downwards, forwards, and to the left side, towards the interval between the fifth and sixth ribs : in many subjects it is curved a little back-