This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1905 Excerpt: ...ventricular contraction. At the moment of ventricular diastole, the fall is very sharp and is interrupted by a wellmarked and sharp rise. Following this the fall is continuous till the next systolic elevation. In the dog the extent of variation of the pressure in auricles and ventricles is roughly as follows--measured ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1905 Excerpt: ...ventricular contraction. At the moment of ventricular diastole, the fall is very sharp and is interrupted by a wellmarked and sharp rise. Following this the fall is continuous till the next systolic elevation. In the dog the extent of variation of the pressure in auricles and ventricles is roughly as follows--measured in millimetres of Hg--Left Ventricle. Maximum.. +140 Minimum..--30 Right Eight Ventricle. Auricle. + 60 +30-15-7 These changes in the pressure in the different chambers are due--1st. To the alternate systole and diastole of the chambers, the first raising, the second lowering the pressure in the chambers. 2nd. To the action of the valves. 6. Action of the Valves of the Heart. A. Auriculo-ventricular (Fig. 115).--These valves have already been described as funnel-like prolongations of the auricles into the ventricles. They are firmly held down in the ventricular cavity by the chorda tendineae. When the ventricle contracts the papillary muscles pull the cusps of the valves together and thus occlude the opening between auricles and ventricles. The cusps are further pressed face to face by the increasing pressure in the ventricles, and they may become convex towards the auricles. They thus form a central core around and upon which the ventricles contract. On the-left side of the heart the strong anterior cusp of the mitral valve does not materially shift its position. It Fig. 115.--State of the various parts of the Heart throughout the Cardiac Cycle. 1, Auricular Systole; 2, Beginning of Ventricular Systole (latent period); 3, Period of Outflow from the Ventricle; 4, Period of Residual Contraction; 5, Beginning of Ventricular Diastole. may be somewhat pulled backwards and to the left. The posterior cusp is pulled forwards against the anterior. On ...
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Add this copy of Essentials of Human Physiology. Second Edition, Revised to cart. $5.92, Sold by Zubal Books rated 4.0 out of 5 stars, ships from Cleveland, OH, UNITED STATES, published 1905 by Edinburgh: William Green & Sons.
Edition:
1905, Edinburgh: William Green & Sons
Hardcover
Details:
Publisher:
Edinburgh: William Green & Sons
Published:
1905
Alibris ID:
17763503169
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Seller's Description:
2nd edition, 444 pp., hardcover, ex library, else text and binding clean and tight. -If you are reading this, this item is actually (physically) in our stock and ready for shipment once ordered. We are not bookjackers. Buyer is responsible for any additional duties, taxes, or fees required by recipient's country.
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