This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1900 edition. Excerpt: ...It would appear that stimulation of the respiratory centre in the medulla oblongata depends primarily upon the condition of the blood. If the blood is very rich in oxygen the respirations are feeble and shallow; if, on the other hand, the blood is highly venous the respirations are deeper and more ...
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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1900 edition. Excerpt: ...It would appear that stimulation of the respiratory centre in the medulla oblongata depends primarily upon the condition of the blood. If the blood is very rich in oxygen the respirations are feeble and shallow; if, on the other hand, the blood is highly venous the respirations are deeper and more frequent, and if the blood remains venous, gradually become forced and laboured until we get the condition called "dyspnoea." Should the blood get more and more venous, the impulses generated in the respiratory centre become more and more vehement. These nervous impulses, instead of confining themselves to the usual nerves distributed to the ordinary respiratory muscles, overflow on to other nerves and put into action other muscles until there is scarcely a muscle in the body that is not affected. The muscles which are thus more and more thrown into action are especially those tending to carry out or to assist expiration; and at last if no relief is afforded the violent respiratory movements give way to general convulsions of the whole body. By the violence of these convulsions the whole nervous system becomes exhausted, the convulsions soon cease, and death is ushered in with a few infrequent and long-drawn breaths. It has been surmised that the excitability of the respiratory nerve-centre is due to certain chemical substances which act as stimulants. When the blood is rich in oxygen this substance is oxidized or burned, and removed so fast that it is able to exert but little influence on the respiratory nerve-centre; when, however, the blood is poor in oxygen, this substance accumulates and the nerve-centre is powerfully stimulated. Thus when the blood needs oxygen, the respirations are increased to get, if possible, more air into...
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Fine. Trade paperback (US). Glued binding. 290 p. In Stock. 100% Money Back Guarantee. Brand New, Perfect Condition, allow 4-14 business days for standard shipping. To Alaska, Hawaii, U.S. protectorate, P.O. box, and APO/FPO addresses allow 4-28 business days for Standard shipping. No expedited shipping. All orders placed with expedited shipping will be cancelled. Over 3, 000, 000 happy customers.
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New. Trade paperback (US). Glued binding. 290 p. In Stock. 100% Money Back Guarantee. Brand New, Perfect Condition, allow 4-14 business days for standard shipping. To Alaska, Hawaii, U.S. protectorate, P.O. box, and APO/FPO addresses allow 4-28 business days for Standard shipping. No expedited shipping. All orders placed with expedited shipping will be cancelled. Over 3, 000, 000 happy customers.
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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Dispatched, from the UK, within 48 hours of ordering. Though second-hand, the book is still in very good shape. Minimal signs of usage may include very minor creasing on the cover or on the spine.
