Final answer:
The resident flora, or normal flora, refers to the microorganisms that naturally live on or inside our bodies. They provide benefits such as preventing infections, aiding in digestion, and helping maintain a balanced immune system. Three examples of resident flora include Lactobacillus spp. in the vagina, intestinal bacteria, and the skin microbiota.
Step-by-step explanation:
The resident flora, also known as the normal flora or microbiota, refers to the microorganisms that naturally live on or inside our bodies. They provide several benefits to human health. Firstly, resident flora occupy niches that might otherwise be taken by pathogenic microorganisms, helping to prevent infections. Secondly, they contribute to the proper functioning of our bodies, such as aiding in digestion and nutrient metabolism. Lastly, resident flora can provide protection against certain diseases and help maintain a balanced immune system.
Three examples of resident flora include:
- Lactobacillus spp. in the vagina: Lactobacillus bacteria produce lactic acid, contributing to the acidity of the vagina. This inhibits the growth of pathogenic yeasts and helps maintain vaginal health.
- Intestinal bacteria: The gut is home to hundreds of species of bacteria and archaea. These microbes aid in the breakdown and digestion of food molecules that our body cannot process on its own.
- Skin microbiota: Our skin is inhabited by a diverse community of bacteria, fungi, and other microorganisms. They play a role in maintaining skin health and protecting against pathogens.