MICB 202 Lecture Notes - Urinary Tract Infection, Pelvic Inflammatory Disease, Neisseria Gonorrhoeae
Document Summary
The bacteria could pass right through the gastrointestinal tract or it could colonize and become part of the normal flora. If the bacteria are pathogenic in nature, the bacteria could infect the gastrointestinal tract. The interactions between the pathogen and host might result in the occurrence of disease: different body parts experience different levels of moisture, temperature, and access to nutrients such as molecular oxygen. The area of the armpit is much warmer and moist relative to the skin on the arm. Different areas of the digestive tract have different ph; some bacteria are better suited for a neutral ph, others are better suited for a more acidic ph. Certain parts of the body are always sterile (except in pathogenic events); these areas include the bloodstream, muscle tissue, other internal tissues, brain, bone, and lower respiratory tract. With the exception of the lower respiratory tract, these areas of the body are not in direct contact with the environment.
