How Much You Know About World Blood Donor Day?

White blood cells are the blood cells that protect us from infection. They are part of our immune system and play a crucial role in defending the body against harmful pathogens such as bacteria, viruses, and fungi. White blood cells are responsible for identifying and destroying these foreign invaders, as well as producing antibodies to help prevent future infections. Without white blood cells, our bodies would be much more susceptible to illness and disease.

Plasma is the correct answer because it is the liquid component of blood that makes up about 55% of its total volume. It is a yellowish fluid that carries various substances such as nutrients, hormones, waste products, and proteins throughout the body. Plasma also plays a crucial role in maintaining blood pressure and regulating body temperature. Red blood cells, white blood cells, and platelets are cellular components of blood and are not considered the liquid part.

Blood group AB+ is considered a universal acceptor because individuals with this blood type have both A and B antigens on their red blood cells, as well as the Rh antigen. This means that they do not have antibodies against A, B, or Rh antigens in their plasma. As a result, they can receive blood transfusions from donors with any blood type without experiencing a severe immune response.

Blood group O+ is considered a universal donor because it does not have any antigens on the red blood cells. This means that it can be transfused to individuals with any blood type without causing an immune reaction. The positive Rh factor in O+ also allows it to be given to individuals who are Rh positive. Therefore, blood group O+ is often used in emergency situations when the recipient's blood type is unknown or when there is a shortage of matching blood types.

Blood group O+ is the most common blood group type because it is compatible with both O+ and O- blood types. This means that individuals with blood group O+ can donate blood to a larger percentage of the population compared to other blood groups. Additionally, O+ is considered a universal donor for Rh-positive blood types, making it in high demand for blood transfusions. Therefore, due to its compatibility and universal donor status, blood group O+ is the most common blood group type.

Karl Landsteiner is the correct answer because he was a renowned Austrian biologist and physician who discovered the ABO blood group system, which revolutionized blood transfusion practices. His groundbreaking work in the early 20th century led to the understanding of blood compatibility and the ability to safely transfuse blood between individuals. World Blood Donor Day is celebrated on his birth anniversary to honor his contributions to the field of transfusion medicine and to raise awareness about the importance of blood donation.

The first World Blood Donor Day was organized in 2004.

World Blood Day is organized on June 14.

Red blood cells have a lifespan of approximately 115 days. This is the average duration for which these cells remain in circulation before being removed by the spleen and liver. The lifespan can vary slightly depending on individual factors, but 115 days is the general estimate.

The theme of World Blood Donor Day 2023 is "Give blood, give plasma, share life, share often." This theme emphasizes the importance of regular blood and plasma donation in saving lives and promoting community solidarity. It encourages individuals to actively participate in blood donation campaigns and highlights the impact of their contribution in supporting healthcare systems and patients in need.