What Are White Blood Cells

The video explores the critical role of blood, focusing on white blood cells, which are essential for the immune system. It details the two types of white blood cells: phagocytes, which engulf bacteria, and lymphocytes, which produce antibodies and antitoxins. The video also touches on the importance of vaccinations in aiding the immune response.

What percentage of our blood is made up of white blood cells?

• 10%

• 5%

• 1%

• 20%

Which type of white blood cell is known for engulfing bacteria?

• Lymphocytes

• Phagocytes

• Platelets

• Red blood cells

Where are phagocytes produced in the body?

• Lymph nodes

• Bone marrow

• Spleen

• Liver

What do lymphocytes produce in response to antigens?

• Enzymes

• Hormones

• Antibodies

• Vitamins

How do vaccinations assist the immune system?

• By increasing red blood cell count

• By providing ready-made antibodies

• By reducing platelet production

• By enhancing plasma volume