Human Body and Microbes Human Body Microflora, Human Body are Commensals, Mutualistic Symbiosis

Scholarships Dictionary Visa Details Study Abroad Exam Results Online Test Jobs

	Home
Microbiology Microbiology Introduction Landmarks in the History of Microbiology Discovery of Microscope Discovery of Microbial Life Abiogenesis Versus Biogenesis / Microbes and the Origin of Life Spontaneous Generation Doctrine or Abiogenesis Controversy over Spontaneous Generation End of the Debate Fermentation / A Biological Process - Pasteurization / Heating Destroys Microbes Germ Theory of Disease Koch's Postulates: The Pathogenesity Test Pure Culture Concept and Other Microbial Techniques Robert Koch 1843-1910 The Father of Microbial Techniques Growth of Medical Microbiology Causation of Diseases Bacterial Diseases and Their Discoverer Immunization Surgical Antisepsis Rise of Chemotherapy Growth of Plant Pathology Discovery of Viruses Soil Microbiology Other Important Contributions Development of Microbiology Since 1590-2000 in Chronological Form and Investors

Home >> Microbiology >>Human Body and Microbes Human Body Microflora

Your Ad Here	Human Body and Microbes (Human Body Microflora) Many micro-organisms inhabit human body externally (on the surface) or indigenously. Most of the indigenous microbes of the human body are commensals, i.e., they do not harm the host. They obtain their nourishment from secretions and excretory wastes of the human body. Some microbes show mutualistic symbiosis. They function as scavengers by ingesting excretory wastes or are beneficial to the host; for instance, certain intestinal bacteria synthesize vitamin B, E and K, whereas others protect the host from the pathogenic microbes.
A. Microbes of the skin. Though human skin secretes some bactericidal substances; many bacteria manage to grow on superficial squamous epithelium of the skin. Staphylococcus, Streptococcus. Diptheroids (aerobic corynebacteria), Propionibacterium, moulds, yeasts and some pathogenic bacteria live on the surface of the skin. They receive their nutrition from the secretions of sebaceous and dead cells. B. Microbes of the mouth cavity. Soluble nutrients and abundance of moisture continuously present in the mouth cavity provide a suitable environment for the growth of bacteria. Several microbes inhabit in the mouth cavity; some common ones are : Staphylococcus aureus, S. epidermidis, S. mitis, peptostreptococci, lactobacilli, Actinomyces, Haemophilus influenzae, Bacteroides oralis, Fusobacterium nucleatum, Candida albicans and Treponema denticola.
C. Microbes of gastro-intestinal tract. Micro-organisms, such as Staphylococcus aureus, S. epidermidis, Streptococcus penumoniae, a-hemolytic streptococci, Haemophilus influenzae and Neisseria inhabit the pharynx. A large number of micro-organisms are found in the large intestine (colon). They include gram -negative bacilli (Fusobacterium nucleatum, F. necrophorum, Bacteroides oralis), gram-positive bacilli (lactobacilli, Eubacterium limosum, Clostridium), peptostreptococci, enterococci, Enterobacter, Escherichia coli, Klebsiella, Proteus and Candida albicans. D. Microbes in respiratory tract. We inhale a large number of adsorbed micro-organisms alongwith dust particles. Most of them are trapped in the nasal cavity. Some staphylococci, aerobic corynebacteria (diptheroids), gram-negative cocci (Branhamella) and gram-positive rods (Haemophilus influenzae) inhabit the nasal cavity.	Your Ad Here
E. Microbes of the urinogenital organs. Mycobacterium smegmatis and mycoplasmas are usually found on the external parts of the genitala. Peptostreptococci, Enterobacteriacease, Clostridium, Staphylococcus, Candida albicans and Trichomonas vaginalis are some common micro-organisms associated with urinogenital organs. F. Microbes of the mucous membrance of the eye. Staphylococcus albus, Cornybacterium xerosis and mycoplasmas are usually associated with the mucous membrane of the eye.

	Home
Scope of Microbiology Microorganisms and Principles of Biology Medical Microbiollogy and Immunology Principles of Soil Microbiology Industrial Microbiology Food Microbiology Milk and Milk Product Microbiology Water Microbiology Sewage Microbiology Air Microbiology Genetic Engineering Microorganisms in Oil Recovery Microorganisms and Energy Microorgnisms and Mining Future Prospects of Microbiology Classification of Microorganisms Basis of Their Body and Nuclear Organization On the Bassis of Organisms Classification On the Basis of Nutrition On the Basis of Oxygen Requirements On the Basis of Temperature Requirements On the Basis of Distrubution On the Basis of Economic Importance On the Basis of Osmotic Conditions Micro-Organisms in Soil / Soil Microflora Micro-Organisms in Water Microbes in Air / Air Microflora Micro-Organisms in Milk / Milk Microflora Important Microbes Present in Milk and Biochemical Changes Micro-organisms in Food / Food Microflora Common Micro-Organisms Responsible for Spoilage of Food Human Body and Microbes / Human Body Microflora

Language >> English | Français | Español | Deutsch | Italiano | Portugues | Japanese | Korean | Sim-Chinese