类别 全部 - immune - pathogens - response - diseases

作者:AlAhmed AlAhmed 3 年以前

235

Protecting Against Diseases

The human body's defense system against diseases comprises both nonspecific and specific immune responses. The skin and mucous membranes serve as primary barriers, preventing pathogens from entering.

Protecting Against Diseases

Protecting Against Diseases

White Blood Cells

Natural Killer Cell
Neutrophil
Macrophage

Immune Response

Non Specific
Protein Activation: interferons
Inflammation: histamine
Fever: high body temperature
Specific
Two-Part Assault
Antigens

Body's Protection Mechanism

Mucous Membrane: sticky fluid mucus
Skin: oil and sweat

Pathogens Enter The Skin

Airborne -> respiratory system
Cuts and abrasions

Pathogens

Disease-causing microorganisms Ex: COVID-19, HIV