The Male Reproductive System

The Male Reproductive System   (Fig. 30) The male genital organs are the 2 testes, the 2 epididymes, the 2 vas deference, the 2 seminal vesicles, the postate gland and the penis.   Testis: (Fig. 31) ll is the primary male sex organ. It is oval in shape and it is about 2 inches x […]

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Physiological changes of the alveolar process

Physiological changes of the alveolar process The internal structure of bone is adapted to mechanical stresses. It changes continuously during growth and alteration of functional stresses. In the jaws, structural changes are correlated to the growth, eruption, movements, wear and loss of teeth. All these processes are made possible only by a coordination of formative […]

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Structure Of The Dental pulp 2

Structure Of The Dental pulp 1 Structure Of The Dental pulp 2   • They are found usually in association with blood vessels. • Mast cells are primarily involved in inflammation and immune mechanisms. c) Plasma Cells : It originates from plasmablast cells which develop from B-lymphocytes. These B- lymphocytes should be activated previously by […]

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Structure Of The Dental pulp 1

Structure Of The Dental pulp 1    The pulp tissue consists of 25%    organic material by weight 75%    water by weight   As any connective tissue, the pulp is composed of cells and intercellular substance. The intercellular substance consists of fibers and an amorphous ground substance of gelatinous consistency. In addition, there are blood vessels, […]

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Structure of cementum

Posted by DAM on February 5, 2012 in Cementum | Short Link
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Structure of cementum Two main types of cementum could be identified on the basis of the presence or absence of cells. Acellular cementum which does not incorporate cells in its calcified matrix. Cellular cementum which contains cementocytes in its calcified matrix. Layers of cellular and acellular cementum may alternate in any pattern. Afibrillar cementum: does […]

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Structure of Dentin 2

Posted by DAM on February 4, 2012 in Dentin | Short Link
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Structure of Dentin 1 Structure of Dentin 2 Mantle Dentin Mantle dentin forms the outer layer of dentin immediately below the DEJ. It is the first layer of dentin formed by the odontoblasts. It is approximately 20um wide and has an organic matrix consisting of large collagen fibrils (Von Korff fibers) which are arranged at right […]

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Structure of Dentin 1

Posted by DAM on February 4, 2012 in Dentin | Short Link
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Structure of Dentin 1 The most characteristic histological features of dentin are the closely packed dentinal tubules which traverse its entire thickness and which contain at least part of their length the cytoplasmic extensions of the odontoblasts, the odontoblastic process. Each cell gives rise to one process. The cell bodies of the odontoblasts are aligned […]

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Organic chemistry

Posted by DAM on November 9, 2011 in Uncategorized | Short Link
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Organic chemistry Organic chemistry is a subdiscipline within chemistry involving the scientific study of the structure, properties, composition, reactions, and preparation (by synthesis or by other means) of carbon-based compounds, hydrocarbons, and their derivatives. These compounds may contain any number of other elements, including hydrogen, nitrogen, oxygen, the halogens as well as phosphorus, silicon, and sulfur.[1][2][3] […]

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