Overview
Barriers to pathogens are essential for maintaining health by preventing infections. These barriers include physical defenses like skin, chemical defenses such as stomach acid, and biological defenses from beneficial microorganisms. Together, they form a comprehensive system that protects the body f...
Key Terms
Example: Bacteria, viruses, and fungi are all types of pathogens.
Example: The immune system identifies and destroys pathogens.
Example: Antibodies bind to viruses to prevent them from infecting cells.
Example: Mucous membranes in the respiratory tract trap pathogens.
Example: Normal flora in the gut help digest food and prevent infections.
Example: Cilia in the lungs help clear out dust and germs.
Related Topics
Immune System Function
Explores how the immune system works to protect the body from pathogens.
intermediateInfection Control Practices
Covers methods to prevent the spread of infections in healthcare and community settings.
intermediateMicrobiology Basics
Introduces the study of microorganisms and their effects on humans.
beginnerKey Concepts
Physical BarriersChemical BarriersBiological BarriersImmune Response