Physical and chemical properties of the blood. Physiology of red blood cells educational manual
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7 5 16 PHYSIOLOGY OF RED BLOOD CELLS
UDC:612.11(075.8)=111 BBC28.91я73 INTRODUCTION Students’ independent practical work is an important part of the syllabus in the course of Normal Physiology. It helps students to study this fundamental subject. Systematic independent work enables to reach the final goal in the students’ education. It is also important while preparing the students for their future clinical work with patients. These theoretic materials, questions and tests will help students to get ready for the examination. CONTENS 1. INTRODUCTION 1 2. CONTENS 2 3. FUNCTIONS OF BLOOD 3 4. COMPOSITION OF BLOOD 4 5. RED BLOOD CORPUSCLES 5 6. ERYTHROPOIESIS 7 7. LABORATORY TEST 21 8. HEMOGLOBIN 26 9. STUDY QUESTIONS 41 10. MULTIPLE CHOICE QUESTIONS (Select the single best answer) 42 11. ANSWERS 71 12. RECOMMENDED LITERATURE 72 Blood, lymph and tissue fluid form the internal environment of the organism. Blood is the fluid constituent of the cardiovascular system, comprising both plasma and cellular components. Fifty-five percent of total blood volume is composed of plasma. Red blood cells, white blood cells and platelets form the cellular component. Blood has many essential homeostatic functions including the transport of oxygen and carbon dioxide, nutrients and waste products, immune function, buffering and hemostasis. As blood has such an important role in the maintenance of homeostasis. Problems with blood composition or circulation can lead to downstream tissue malfunction. Blood is also involved in maintaining homeostasis by acting as a medium for transferring heat to the skin and by acting as a buffer system for bodily pH. FUNCTIONS OF BLOOD In our body, the blood performs the following functions : 1. Respiratory. The hemoglobin of RBC picks up oxygen in the lungs, the oxyhemoglobin now circulates and discharges the oxygen into the tissues which need it. For this purpose, as it will be shown, the RBC and Hb are ideally designed. Further, the CO2 produced in the tissues are discharged into the blood, it is partly carried by the plasma and partly by the Hb; the CO 2 is ultimately disgorged into the lungs. 2. Excretory. Various waste products of the body are carried by the blood and ultimately removed from the body via the kidneys. Download 0.59 Mb. Do'stlaringiz bilan baham: |
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