MICROANATOMY

Detailed explanation-1: -The third line of defense is specific resistance. This system relies on antigens, which are specific substances found in foreign microbes. Most antigens are proteins that serve as the stimulus to produce an immune response. The term “antigen” comes from ANTI-body GENerating substances.

Detailed explanation-2: -Humans have three types of immunity-innate, adaptive, and passive: Innate immunity: Everyone is born with innate (or natural) immunity, a type of general protection.

Detailed explanation-3: -First line of defense: Owns and manages risks/risk owners/managers. Second line of defense: Oversees risks/risk control and compliance. Third line of defense: Provides independent assurance/risk assurance.