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18 Cards in this Set
- Front
- Back
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Describe the normal volume and percentage of major consitutents/components of blood |
Component of blood Plasma 55% volume Red blood cells 45% volume human blood is 8% of the body weight = 5 litres Ph 7.35-7.45 |
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Main functions of blood
and their examples |
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Transport substance to body cells
Oxygen from the lungs to peripheral tissues and carbon dioxide from those tissues to the lungs |
Nutrients are absorbed at the digestive tract and released from storage in adipose tissue or in the liver |
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Hormones |
Hormones carried from endocrine glands toward their target cells |
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It absorbs and carries wastes produced by tissue cells to the kidney for excretion |
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Regulation |
PH-blood absorbs and neutralises acids generated by active tissues such as lactic acid produced by skeletal muscles ph blood absorbs and prevent acids produced by active tissue such as lactic acid produced by skeletal muscles |
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Body temperature - blood absorbs the heat made by active skeletal muscles and deliver it to tissues of body. if body temp is too low, the warm blood is directed to the brain and to other temperature-sensitive organs |
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Ion composition of interstitial fluid - diffusion between interstitial fluids and blood eliminates local deficiencies or excess of ions such as calcium or potassium |
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Protective |
Preventing blood loss by forming a clot of blood that contains enzymes and substances responds to breaks in vessel walls by the process of clotting |
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Preventing infection through antibodies, immune proteins and white blood cells of the blood |
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Give the normal percentage of the components of plasma |
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plasma components and their functions |
plasma components 90-92% of water7-8% protein1-2% salts metabolic waste products hormones nutrients respiratory gases |
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Salts |
combination of these salts includes sodium ions, calcium ions, bicarbonate ions, chloride ions and potassium ions. helps to maintain osmotic pressure, pH balance and membrane permeability |
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Water |
Water function is to dissolved substances then carries it in the bloodstream. Water is a solvent - dissolved substances |
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Nutrients |
Glucose, fatty acids, and amino acids these nutrients absorbed from digestive tract and transported to cell for use as fuels and building materials |
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metabolic waste products |
waste products such as urea and uric acid produced by cells are transported to the kidney and liver for elimination from the body |
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Respiratory gases |
Oxygen and carbon dioxide are transported to and from the lungs are dissolved in the plasma and carried by red blood cells |
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Hormones are circulated in the plasma from their endocrine glands and tissues, to their target cells |
