Question

Explain:-
• Innate immunity,
• Acquired immunity,
• Passive immunity,
• Active immunity, and
• Auto immunity.​

Answer 1

Answer:

Explain:-

• Innate immunity, The innate immune system is essentially made up of barriers that aim to keep viruses, bacteria, parasites, and other foreign particles out of your body or limit their ability to spread and move throughout the body. The innate immune system includes: Physical Barriers.

Acquired immunity: Immunity acquired by infection or vaccination (active immunity) or by the transfer of antibody or lymphocytes from an immune donor (passive immunity). Acquired immunity is in contrast to innate immunity (natural immunity).

Passive immunity is provided when a person is given antibodies to a disease rather than producing them through his or her own immune system. A newborn baby acquires passive immunity from its mother through the placenta.

Explanation:

Active immunity refers to the process of exposing the body to an antigen to generate an adaptive immune response: the response takes days/weeks to develop but may be long lasting—even lifelong. Active immunity is usually classified as natural or acquired.

Autoimmunity is the system of immune responses of an organism against its own healthy cells and tissues. Any disease that results from such an aberrant immune response is termed an "autoimmune disease".

Answer 2

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Innate Immunity :

• Innate immunity is inherited and it acts as the first response to any Pathogen invasion.
• skin, tears, Selva, neutrophils, PMC, Natural Killer Cells etc are examples of innate immunity.
• Further mucus in gastrointestinal tract, respiratory tract and nasal passage traps pathogens.

Acquired Immunity :

• Immune responses which are a result of adaptation for injection of vaccines and entibiotics during the course of life time.

passive immunity :

• Vaccine is essentially traces of decaying virus or certain proteins injected into the body for the sake of recognition (Memory Cells of Lymphatic System) and ensue a stronger secondary response in future.
• Similarly newborns receive LgA more breast milk.
• ln other words, immunity from external sources is passive immunization.

Active Immunity :

• Suppose a pathogen makes its way into the human body, the B cells initiate a short lived primary immune response.
• The some information is stored in memory cells found in lymph nodes.
• If the same pathogen were to call the human body it's home, a secondary immune response is initiated by T Cells and memory Cells to drive away the nemesis.
• Vaccines work on the same principle.

Autoimmunity :

• Autoimmunity is a dire condition when your T Cells are unable to recognize self cells and direct antibodies to act on host antigens weakening the immune system.