PORTAL OF ENTRY AND EXIT OF MICROORGANISMS
most of the microorganism enter in human body through the a particular portal and cause disease in human body. most of the pathogen can causes infection only if they enter through a particular route they route or portal are following .
- skin
- respiratory tract
- digestive tract
- genitourinary tract
2. respiratory tract - it is a common portal of enter microorganism because many microorganism present in air they are spread widely during inhalation of oxygen or talking , coughing, sneezing these enter into respiratory tract with inhaled O2 example organism causing diseases such as tuberculosis , pneumonia,clod , diphtheria, etc.
3. digestive tract - the digestive tract infection is caused by intake of contaminated food, water , milk and other product which we are eat and through the water , milk , food microorganism enter in digestive tract and cause disease such as typhoid ,cholera (food poisoning) and other disease
4. genitourinary tract - genitourinary caused by pathogenic microorganism its mostly cause by bacteria from urethra ,perineum , etc and some disease cause by sexual contact with infected person and important cause of STD,AIDS, gonorrhoea ,syphilis.
PORTAL OF EXIT -
microorganism leave from the body through the same system or portal they enterd in body example organism causing respiratory disease usually given through nasal discharge and sputum etc.
1. blood - most of the bacteria present in infected blood and we are transfusion the infected blood for healthy man causes disease .
2.skin - microorganism leave from the skin we contact with infected skin or material microorganism
transfer easily.
3. urine - pathogen of typhoid and tuberculosis exit through the urine .
4. nose - through the nasal discharged many pathogen leave from the body.
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