Category: Immunology
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DISEASE CAUSING AGENTS (NEET)
When we talk about disease causing agent, we emphasis on the aspects that result in the diseases. There are number of agents that results in diseases. 1 .PHYSICAL AGENT The physical agent is characterized by TEMPERATURE PRESSURE HUMIDITY RADIATION As the temperature increases or decreases, the body need time to acclimatize to that surrounding. If…
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HUMAN HEALTH & DISEASE (NEET)
HEALTH A Person who is free from disease is not considered to be healthy, but a person who is Physically, Mentally & Socially fit is considered to be healthy. Many factors influence the health of a person, it includes: Balanced diet Regular exercise Personal hygiene Awareness about disease Immunization Proper disposal of wastes. DISEASE When…
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HUMAN DEFENCE MECHANISM
To build up the body & to fight against pathogens or foreign bodies, a defence mechanism is required. There are 3 lines of defence. 1st line of defence 2nd line of defence 3rd line of defence The defense mechanism is of two types: Non specific Specific NON SPECIFIC The non specific defense system deals with…
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HEMATOPOIETIC STEM CELL
All blood cells arises from a type of stem cell called Hematopoietic Stem Cell (HSC) and the process is called haematopoiesis. HSCs are pluripotent. Stem cells are self renewing. Stem cell maintain their population by cell division. Location : Bone Marrow PROGENITOR CELLS – DIFFERENTIATE INTO SPECIFIC CELL TYPES BUT HAVE LOST THE ABILITY TO…
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The Basics – Human Health & Disease
Health can be defined in certain ways, but heath is sum total of physical, mental and social well being. Social + mental + physical = health Mind plays a very important role as it influenced by neural system, endocrine & immune system. The immune system maintains our heath, thus directly or indirectly mind affects our…