NEET Exam > NEET Videos > Fun video: Immunity, Innate Immunity (Part - 2)
Fun video: Immunity, Innate Immunity (Part - 2) Video Lecture - NEET
FAQs on Fun video: Immunity, Innate Immunity (Part - 2) Video Lecture - NEET
| 1. What is innate immunity? |  |
Ans. Innate immunity is the first line of defense in our body's immune system. It is a non-specific defense mechanism that provides immediate protection against a wide range of pathogens. This type of immunity is present at birth and includes physical barriers like the skin, mucous membranes, and chemical barriers like enzymes and antimicrobial proteins.
| 2. How does innate immunity differ from adaptive immunity? | |
Ans. Innate immunity and adaptive immunity are two branches of the immune system that work together to protect our body. Innate immunity is the first line of defense and is non-specific, meaning it responds to a wide range of pathogens. On the other hand, adaptive immunity is specific and develops over time as it recognizes and remembers specific pathogens. It provides long-term protection and is characterized by the production of antibodies and memory cells.
| 3. What are the physical barriers of innate immunity? | |
Ans. Physical barriers are an important component of innate immunity. They include the skin, which acts as a physical barrier preventing pathogens from entering the body. Mucous membranes in the respiratory, digestive, and urinary tracts also serve as physical barriers by trapping pathogens and preventing their entry into the body. Additionally, the cilia in the respiratory tract help in sweeping away pathogens and foreign particles.
| 4. How do chemical barriers contribute to innate immunity? | |
Ans. Chemical barriers are an integral part of innate immunity. They include enzymes and antimicrobial proteins that help in destroying or inhibiting the growth of pathogens. For example, lysozyme is an enzyme found in tears, saliva, and mucus that can break down the cell walls of certain bacteria. Antimicrobial proteins like defensins act by disrupting the microbial cell membranes, preventing their survival and replication.
| 5. Can innate immunity be strengthened or enhanced? | |
Ans. While innate immunity is not specific to particular pathogens, it can be strengthened or enhanced to some extent. Maintaining a healthy lifestyle, including regular exercise, balanced nutrition, and adequate sleep, can contribute to a stronger immune system overall. Additionally, avoiding stress, practicing good hygiene, and minimizing exposure to harmful substances can help support innate immunity. However, it is important to note that innate immunity is largely genetically determined and cannot be drastically altered through external factors.
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Dec 18, 2024 Last updated |
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