Resident microbiota

Definition

Resident microbiota are the microorganisms that consistently inhabit various sites of a healthy human body, forming a stable and symbiotic relationship. They play a crucial role in protecting against pathogens and maintaining homeostasis.

5 Must Know Facts For Your Next Test

1. Resident microbiota are primarily composed of bacteria but also include fungi, viruses, and protozoa.
2. They contribute to the immune system by outcompeting potential pathogens for resources and space.
3. Common sites for resident microbiota include the skin, gut, respiratory tract, and urogenital tract.
4. Disruption of resident microbiota can lead to dysbiosis, which is associated with various diseases like inflammatory bowel disease and infections.
5. The composition of resident microbiota varies significantly between individuals based on factors like diet, age, environment, and genetics.

Review Questions

• What are the primary components of resident microbiota?
• How do resident microbiota contribute to the immune defense?
• What factors can influence the composition of an individual's resident microbiota?

Related terms

Pathogen: A microorganism that causes disease in its host.

Symbiosis: A close and often long-term interaction between two different biological species.

Dysbiosis: An imbalance in the microbial communities within the body that is associated with health issues.