normal flora pdf

- Many of the normal flora are opportunistic ie. Characteristics of Normal Flora Different body sites may have same or different flora depending on local conditions.

Pdf Effect Of Antibiotics On Human Microbiota And Subsequent Disease

All content in this area was uploaded by Lynne Mcfarland on Aug 22 2014.

. Throat or pharynx 21. Microorganisms native or belonging naturally to a region Many bacteria commonly. 1 Body surfaces 2 Mucus membranes skin and mucous membranes are always contact with environmental organisms and become colonized by.

These organisms participate in bile acid conversion and in vitamin K and ammonia. Therefore microorganisms in duodenum is similar to that of stomach. Organisms frequently found on or within body of healthy individuals In healthy human there are many of bacteria are consistently associated with the body.

Ecoli causes urinary tract infection UTI if the site of habitat is changed. Some pathogenic organisms may establish themselves in a host without manifesting symptoms the host is then referred to as a. A diverse microbial flora is associated with the skin and mucous membranes of every human being from shortly after birth until death.

Disease Normal Flora and Pathogenesis DRTVRAO MD 7. Normal flora are microorganisms bacteria fungi protozoa and viruses mostly bacteria that continuously inhabited the human body Resident Normal Flora. Within a few hours of birth oral and nasopharyngeal flora develops and in a day or two resident flora of the lower intestine appears OBJECTIVES After reading this lesson you will be able to.

These microorganisms under normal condition live as commensal on host body but they causes diseases if opportunity is available. Normal flora of GI tract ie. Ecoli causes urinary tract infection UTI if the site of habitat is changed.

Beneficial role of normal flora. Mainly Lactobacillus and Enterococcus are found in deuodenum. From duodenum ileum intestine become less acidic and hence number of microorganism increases.

Microbiota of the human body has been an area of increasing interest in both research and the popular media. Normal Flora National Cancer Institute Source National Cancer Institute. SIGNIFICANCE OF NORMAL FLORA 1The normal flora influences the anatomy physiology susceptibility to pathogens and morbidity of the host.

Blood brain muscle etc are normally free of microorganisms. - Has more bacteria than any other part of the body. The importance of the normal bacterial flora aka.

MODULE Normal Flora of Human Body Microbiology 78 Notes 7 NORMAL FLORA OF HUMAN BODY 71 INTRODUCTION In a healthy human the internal tissues eg. The Normal Flora of Humans Definition. Because of the normal flora occupy bodys epithelial surfaces they are able to prevent other bacteria from establishing themselves by blocking receptors attachment competing for essential nutrients or producing anti-bacteria substances.

Some normal flora become opportunistic pathogens Staphylococcus aureus Streptococcus mutans Enterococcus faecalis Streptococcus pneumoniae Pseudomonas aeruginosa etc Breach of skinmucosal barrier. Duodenum is adjacent to stomach and hence it is slightly acidic in nature. Normal flora of the Oral cavity Nutrients Epithelial cells Secretions 19.

This bacterial population constitutes the normal microbial floraThe normal microbial flora is relatively stable with specific genera populating. Harmless or beneficial population of microorganisms or plant life that normally occur in specific areas of the body or the environment. The effect of the normal flora on the host was not well understood until germ-free animals became available.

Table2 Characteristics ofwomenwithBVcandidiasis andnormalmicroscopy Normal Candida BV pvalue Variable n 8 n 8 n 10 BVvsnormal Averageagerange 394 35-6 405- Sexuallyactive 8 7 9 0-91. Maintaining health and normal function. The bacterium called escherichia coli.

Z describe normal flora z enlist the Advantages and Disadvantages of flora z describe the normal flora of various parts of the body 72 NORMAL MICROBIAL FLORA The term normal microbial. An association between two species in which one benefits and the other is neither harmed nor benefited. However the surface tissues ie skin and mucous membranes are constantly in contact with environmental organisms and.

In normal hosts the duodenal flora is sparse 0 to 10 3 g of contents. -Also many fungi protozoa and viruses can live there. An association between two species in which each benefits the other Pathogen.

Normal Bacterial Flora Bacterial Virulence Factors Mechanisms of Pathogenicity Host Defense Mechanisms Selected Bacterial Diseases Review lecture materials on BacteriaHost Intreactions Distruption of Normal Flora Trauma - appendix rupture dental. What are Normal Flora. Content uploaded by Lynne Mcfarland.

Parts have more no. Role of normal flora. More recent calculations however result in a ratio closer to 11 with an.

Normal flora of GI tract ie. Normal flora of the Gastrointestinal tract Esophagus Stomach Proximal small intestine Distal part of the small intestine Large intestine colon 18. And aid in the.

99 of normal flora in the large intestine are anaerobic Bacteroides spp. Normal flora and pathogens if our good microorganisms move to a different part of our body other than where they normally reside they may become pathogenic. If e coli enters the urinary system then it causes an infection known.

One frequently cited statistic is that there are 10-100 times more bacterial than human cells in the body. An agent a microorganism that cause disease Indigenous flora. The human body which contains about 10 13 cells routinely harbors about 10 14 bacteria Fig.

Trauma surgery burns Bacterium at one site may be commensal but might be pathogenic at another site. After birth the infant is exposed to the flora of the mothers genital tract to the skin and respiratory flora of those handling delivery and. Local conditions select for those organisms that are suited for growth in a particular area.

The flora of the large bowel is dense 10 9 to 10 11 g of contents and is composed predominantly of anaerobes. Transient flora are inhabited for short period Origin of normal flora The human fetus is sterile until the birth membranes ruptures. Resident flora of certain areas plays a definite ro le in.

These microorganisms under normal condition live as commensal on host body but they causes diseases if opportunity is available. Resident flora in the intestinal tract synthesize vitamin K. The ileum contains a moderately mixed flora 10 6 to 10 8 g of contents.

E coli is part of the normal flora of the large intestine. Normal flora of small intestine. Under normal conditions in a healthy human they are harmless and may even be beneficial.

Pdf Normal Flora Diversity And Functions