Essentials of Physiology (Paperback)


Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: CHAPTER V BLOOD AND LYMPH The blood is an opaque, viscous, alkaline fluid, of an average specific gravity of 1055. The opacity is dependent upon the cells. The viscosity, by which we mean the measure of the stickiness of the blood as it comes in contact with the vessel walls, is increased by a meat diet and decreased by the abundant use of fluids, but is independent of the specific gravity. The opacity of the blood is dependent upon the blood-cells, which are small organized bodies suspended in the fluid, which is called blood-plasma. In man the ratio of blood weight to body weight is about as 1: 20. The blood-cells form about 50 per cent. by volume of the blood, the remainder being plasma. There are two varieties of blood-cells, red cells, or erythrocytes, and white (colorless) cells, or leukocytes. There are also minute bodies called blood-platelets or plaques. The functions of the blood are as follows: (1) It carries to the tissues food-stuffs after they have been properly prepared by the digestive organs. (2) It carries to the tissues oxygen absorbed from the air in the lungs. (3) It carries from the tissues various waste products formed in the processes of metabolism. (4) It is the medium for the transmission of the internal secretions of certain glands. (5) It aids in equalizing the temperature and water-contents of the body. (6) It contains substances which neutralize, antagonize, or destroy foreign substances which may be introduced into the organism. Erythrocytes.?The chemical composition of the red cells is about as follows: Water 61.0 per cent. Hemoglobin 3 2.0 " Protein 5.6 " Lecithin and cholesterin 0.4 " Inorganic salts 1.0 " The red cells have no nuclei. They are small biconcave disks of a reddish color. The color is du...

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Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: CHAPTER V BLOOD AND LYMPH The blood is an opaque, viscous, alkaline fluid, of an average specific gravity of 1055. The opacity is dependent upon the cells. The viscosity, by which we mean the measure of the stickiness of the blood as it comes in contact with the vessel walls, is increased by a meat diet and decreased by the abundant use of fluids, but is independent of the specific gravity. The opacity of the blood is dependent upon the blood-cells, which are small organized bodies suspended in the fluid, which is called blood-plasma. In man the ratio of blood weight to body weight is about as 1: 20. The blood-cells form about 50 per cent. by volume of the blood, the remainder being plasma. There are two varieties of blood-cells, red cells, or erythrocytes, and white (colorless) cells, or leukocytes. There are also minute bodies called blood-platelets or plaques. The functions of the blood are as follows: (1) It carries to the tissues food-stuffs after they have been properly prepared by the digestive organs. (2) It carries to the tissues oxygen absorbed from the air in the lungs. (3) It carries from the tissues various waste products formed in the processes of metabolism. (4) It is the medium for the transmission of the internal secretions of certain glands. (5) It aids in equalizing the temperature and water-contents of the body. (6) It contains substances which neutralize, antagonize, or destroy foreign substances which may be introduced into the organism. Erythrocytes.?The chemical composition of the red cells is about as follows: Water 61.0 per cent. Hemoglobin 3 2.0 " Protein 5.6 " Lecithin and cholesterin 0.4 " Inorganic salts 1.0 " The red cells have no nuclei. They are small biconcave disks of a reddish color. The color is du...

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Product Details

General

Imprint

Rarebooksclub.com

Country of origin

United States

Release date

May 2012

Availability

Supplier out of stock. If you add this item to your wish list we will let you know when it becomes available.

First published

October 2010

Authors

Dimensions

246 x 189 x 4mm (L x W x T)

Format

Paperback - Trade

Pages

66

ISBN-13

978-0-217-71604-8

Barcode

9780217716048

Categories

LSN

0-217-71604-0



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