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COMPOSITION AND FORMATION OF BLOOD

COMPOSITION AND FORMATION OF BLOOD Introduction Blood is a fluid connective tissue which circulates continuously around the body allowing constant communication between tissues distant from each other. It is pumped by the heart that circulates throughout the body vio., The  arteries, veins and capillaries. The blood carries oxygen and nutrients to the body tissues and removes carbon dioxide and other wastes. All types of blood cells are derived from the bone marrow. Composition of Blood Total blood volume: 5-6 littles (8% of body weight or 80 ml/kg body weight) Specific gravity:1050-1060 Viscosity: 4-5 times that of water pH: 7.4±0.05; alkaline Formation of blood cells * The process of blood cells formation is called Haemopoiesis . * Blood cells are synthesized mainly in Red Bone Marrow . * Red bone marrow is a highly vascularized connective tissue located in the microscopic spaces between trabecular of spongy bone tissue. It chiefly present, in bones of the axial skeleton, pectora...
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Tissues including membranes and glands: types

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Definition A tissue is a group of cells the Usally have a common original in an embryo and function  together to carry out specialized activities. Types of tissues The tissues of the consist of large numbers of cells and they are  classified according to the size, shape and functions of these cells. There are four main types of tissue that each have subdivisions . They are: ¹. Epithelial tissue ². Connective tissue ³. Muscular tissue 4. Nervous tissue 1. Epithelial Tissue It covers body surface and lines hollow organs. Body cavities and ducts. It is allows the body interact with internal and y environment. Epithelial tissue consists of cells arranged in continuous sheets in single or multiple layers. Structure of Epithelial Tissue: Apical surface of an Epithelial cell faces the body surface, body cavity, lumen  of an internal organ recieves cell  secretion. The lateral surfaces of an Epithelial cell facing the adjacent cells on either side may contain...
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Positions ( स्थितियां)

Positions 1. Anatomical Position:  To describe body parts and position accurately, we need an initial reference point and must indicate direction. When a person is standing standing straight with eyes looking forward both arms by the side of body, palms facing forward and both feet together . 2. Supine position: when a peron is lying on his/ her back, arms by  the side, palms facing upward and feet put together. 3. Prone Position: Person lying on his/her face chest and abdomen. 4. Lithotomy position: person lying on his/her back with legs up and feet supported in straps. It is used during delivery of the baby. Translate: Hindi स्थितियां  1. शरीरिक स्थिति: शरीर के अंगों और स्थिति का सही वर्णन करने के लिए, हमें एक प्रारंभिक संदर्भ बिंदु की आवश्यकता होती है और दिशा का संकेत देना चाहिए।  जब कोई व्यक्ति शरीर के किनारे दोनों भुजाओं को आगे की ओर देखता हुआ सीधा खड़ा होता है, हथेलियाँ आगे की ओर और दोनों पैर एक साथ।  2. सुपाइन पोजीशन: जब एक पेरोन अपनी पीठ के बल लेटा ...
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