Chapter 24, Problem 3SQ

Summary Introduction

Concept introduction:

The immune system of the human body is divided into two main branches, namely the innate immunity and the adaptive immunity. Innate or the body’s first defence mechanism is present since birth, and this defence mechanism is non-specific, which means it acts as a barrier in for every foreign body irrespective of its structure. The adaptive immune system or the acquired immune system is a subsystem of all immune systems, which is the association of highly specialized systematic cells. Adaptive immunity influences immunological memory after an initial response toward a specific pathogen.