Innate & Adaptive Immunity: The Immune & Lymphatic Systems Introduction

Innate Immunity

  • Innate immunity is the first line of defense. It’s a rapid response compared to adaptive immunity which can take days.
  • “These cells signal the occurrence of injury or infection and initiate a cascade of inflammatory processes that help contain an infection and promote healing and recovery.” (Slavich)

Adaptive Immunity

  • Adaptive immunity is created in response to exposure of a foreign body.  It can work without innate immunity.
  • The function of adaptive immune responses is to destroy invading pathogens and any toxic molecules they produce. (Alberts B, Johnson A, Lewis J, et al, 2002).