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Showing posts from October, 2021

Introduction to cell injury and it's Causes

 Introduction to cell injury and it's Causes. Definition of cell injury- Cell injury defined as the effect of a variety of stress due to etiological agents a cell encounters resulting in change in its internal and external environmental. ↬ cells actively interact with their environment, constantly adjusting their structure and function to accommodate/ adopt changing demands and extracellular stresses. where as stress means increase work load in heart.  ↬ Intracellular substance of the cells is normally tightly regulated such as Homeostasis ↬ As cells encounter physiologic stresses or potentially injurious conditions(such as nutrient deprivation) ↬ when body cell are exposed to antigen then they have inbuilt mechanism to deal with change in environment or adaptation but cellular injury occurs when a stress exceeds the cells can not ability to adopt. Cellular adaptation- The cells of our body they have the power or capacity to a response to stressful by changin...

introduction to cell

Introduction to cell ⇨Study of cell is Cytology. ⇨Study of tissue is histology. ⇨ ROBERT HOOK coined the term Cell in 1665.       ↬      Cell is the smallest structure and functional unit of our body and it formed the basic unit of tissue, later which form organ further system the body.        ↬    Cell are not static as like we seeing in diagram in flate. they have three diamentional shape and these size can be varries from minimum 6µm(that of resting lymphocytes)- 80µm(That of mature ovum).   Structure of cell- A eukaryotic cells consist of the following structure.  Cell membrane or plasma membrane or unit membrane or three layered membrane. ↬ impermeable for large molecules like protein permeable for small molecules like- Iron, metabolites, inside of the cells is-              Cytoplasm              Mitochondrion     ...

introduction to pathology and it's sub-division

Introduction to Pathology and its sub-divisions Father of medicine - Hippocrates, Father of Modern medicine - Sir William Osler. Father of Cellular Pathology-  Rudolf Virchow. (1821-1902 Father of Clinical Pathology- Paul Ehrlich.-1854-1915) German physician Pathology- The word Pathology in derived from 2 Greek ward where in Pathos - Suffering / Disease Logos - Study means - Study of disease/OR - Scientific study of changes in the structural and functional activity of the cell, tissue, and organs in disease condition.  Pathology consist of the abnormalities in normal Anatomy and Physiology owing to disease. Disease - Disease is the opposite to health. Dis+ease - While disease is loss of ease (comfort) to the body Syndrome - Its use for combination of several clinical features caused by altered physiologic process. Divisions of Pathology Study of Pathology divided in two broad branch 1) General Pathology             2) S...