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Showing posts from May, 2023

WHAT IS IMMUNITY &TYPES

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Immunity:- It refers to the ability of immune system to fight against pathogens. It is of two types: 1)innate immunity 2) aquired immunity 1)Innate immunity:-T he immunity that is present at the time of birth of an individual is known as innate immunity.Also called non-specific immunity, it is inherited or passed genetically from parents to children.It also provides the first line of defense to the body. (i) A physical barrier such as skin. (ii) Physiological barriers such as pH of the stomach, bile juice. (iii) Cellular barriers such as leucocytes, macrophage cell. (iv)a cytokine barrier  (i) physical barriers:-they play an important role in preventing microbes from reaching tissues that are susceptible to infection. At the cellular level, barriers consist of cells that are tightly joined to prevent invaders from crossing through to deeper tissue for example skin is the most important physical baarier present in our body ,the mucous membranes lining the nose, mouth, lung...

WHAT IS HUMAN HEALTH?

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  Human Health  The old definition of health according to the early Greek thinkers like Hippocrates and Indian ayurveda system it is the balance of mind and certain humour.   According to them a person who has good humour of hipothesis have a mixture of Blood,phelgm, yellow bile & black bile . They have a reflective thought that a person with black bile belonged to hot personality and would have fevers later this thought was disapproved by William Harvey by the discovery of blood circulation. The modern view of health according to W.H.O(world health organisation) it the state of complete mental, physical and social well being.It is the not only absence of disease or not only physical fitness . Balanced diet, personal hygiene and regular exercise are very important to maintain good health. Health is also affected by the genetic disorder, infections, lifestyle.Being healthy should be part of your overall lifestyle. Living a healthy lifestyle can help pre...