Question

difference between innate immunity and required immunity

Answer 1

The answer is.........





The purpose of both the systems is to protect the body from diseases or illnesses. However, in order to understand the functioning of each, some basic knowledge about these two varieties is shared here.

Innate or Natural Immune System

Innate immune system is also referred to as immediate response immune system. This system activates within minutes to hours after a foreign agent invades within the human body. Innate immune system is composed of two lines of defenses. First line of defense consists of skin (mainly the epidermis), gastric acid in the stomach and mucus membranes. For instance, nasal mucus membrane serves as a filter to stop/obstruct the inward movement of large particles. The second line of defense consists of chemicals and cells that are released in the blood after being exposed to a pathogenic stimulus.

Adaptive or Acquired Immune System

Adaptive system is mainly responsible for more complex reactions. This system activates after innate response is fully activated. Initially, the antigen entered in body is identified by the specific immune cells, and then a cascade of reactions is started in the form of antigen antibody reaction to attack the antigen. This immune system also includes generating memory of antigens, which will save their identities in the memory cells so that a specific response will be initiated soon after entry of the same pathogen in future.

Answer 2

Answer:

Innate immunity:

1. It is a non−pathogen specific type of defense mechanism.
2. It is inherited from parents and protects the individual since birth.  
3. It operates by providing barriers against the entry of foreign infectious agents.  
4. It does not have a specific memory.  

Acquired immunity:

1. It is a pathogen specific type of defense mechanism.  
2. It is acquired after the birth of an individual.
3. It operates by producing primary and secondary responses, which are mediated by B−lymphocytes and T-lymphocytes.
4. It is characterized by an immunological memory.