Question

Colostrum, the yellowish fluid, secreted by mother during the initial days of lactation is very essential to impart immunity to the newborn infants because it contains:

• A. Natural killer cells
• B. Monocytes
• C. Macrophages
• D. Immunoglobulin

Answer 1

The Correct Option is D

The question asks about the importance of colostrum, the yellowish fluid secreted by a mother during the initial days of lactation, and its role in imparting immunity to newborn infants. Let's analyze the given options and explain why the correct answer is "Immunoglobulin."

1. Understanding Colostrum:
   • Colostrum is the first form of milk produced by mammals immediately following the delivery of the newborn.
   • It is rich in nutrients and antibodies essential for the infant's immune system.
2. Role of Immunoglobulins in Colostrum:
   • Immunoglobulins, also known as antibodies, are proteins that play a crucial role in the immune response by identifying and neutralizing pathogens such as bacteria and viruses.
   • Colostrum is especially rich in Immunoglobulin A (IgA), which provides passive immunity to the newborn by protecting the mucous membranes lining the throat and gut.
   • This passive immunity is vital for the newborn as their own immune system is not yet fully developed.
3. Evaluation of Other Options:
   • Natural Killer Cells, Monocytes, and Macrophages are all components of the immune system. However, they are not present in colostrum in significant amounts to impart immunity in newborns.
   • These cells are part of the adaptive and innate immune response within the body rather than being transferred significantly through lactation.
4. Conclusion:
   • The primary component of colostrum that imparts immunity to newborns is Immunoglobulin.
   • Thus, the correct answer is "Immunoglobulin."