BIOL 2051 Study Guide - Gingival Sulcus, Apocrine, Dental Plaque
Document Summary
Vary with the type of tissue & conditions ph, moisture, other microbes present. There are billlions of microbial cells living in and on the human body. Microbes grow mostly in moist areas underarms, genitals, etc. Associated with sebaceous glands and apocrine glands (ph 4-6) Factors that affect types of normal flora- weather, age, personal hygiene. Microbes commonly associated with the skin: most are g+ Most inhibited by lysozyme and continual rinsing of the conjunctiva (eye surface) Sometimes s. epidermis and some gram + rods can temporarily reside in eye without causing infection. Pinkeye/conjunctivitis can be cause by several types of bacteria and viruses. Bacteria in the mouth prior to tooth formation are mainly aerotolerant anaerobes such as streptococcus and lactobacillus as well as some yeast. After teeth emerge, anaerobic areas between teeth and gums support anaerobes such as prevotella and fusabacterium. Teeth and gingival crevices colonized by over 500 species of bacteria.
