ANATOMY

Detailed explanation-1: -Because of the generation of memory cells, the secondary immune response is faster and stronger, leading to more effective pathogen elimination in comparison to the primary immune response.

Detailed explanation-2: -During the secondary immune response, the immune system can eliminate the antigen, which has been encountered by the individual during the primary invasion, more rapidly and efficiently. Both T and B memory cells contribute to the secondary response.

Detailed explanation-3: -A secondary immune response occurs as a result of a subsequent exposure to an antigen. It is a much more rapid and sustained response due to the action of memory immune cells.

Detailed explanation-4: -Once the immune system recognizes a pathogen as “non-self, ” it uses cellular and chemical defenses to attack it. After an encounter with a new pathogen, the adaptive immune system often “remembers” the pathogen, allowing for a faster response if the pathogen ever attacks again.