Understanding the Immune System

The video explains how the immune system protects the body from bacteria encountered daily. It covers the roles of skin, mucus, stomach acid, and the lymphatic system, including lymph nodes, spleen, and tonsils, in defending against pathogens. Bone marrow and the thymus are highlighted for their roles in producing immune cells, particularly T cells. The video concludes with a reminder of the importance of kindness.

What is the primary role of the immune system?

• To produce energy

• To protect the body from pathogens

• To digest food

• To regulate body temperature

How does the skin contribute to the immune system?

• By producing antibodies

• By acting as a barrier to pathogens

• By filtering blood

• By storing white blood cells

What is the function of mucus in the immune system?

• To digest food

• To transport oxygen

• To produce white blood cells

• To trap invading germs

What is lymph?

• Blood that escapes from capillaries

• A fluid that transports oxygen

• A hormone produced by the thymus

• A type of white blood cell

Which organ acts as a filter and stores immune cells?

• Spleen

• Kidney

• Heart

• Liver

What is the role of lymph nodes in the immune system?

• To produce antibodies

• To regulate body temperature

• To trap germs

• To store red blood cells

Where are immune system cells produced?

• In the liver

• In the skin

• In the bone marrow

• In the spleen

What is the function of T cells?

• To attack and destroy viruses

• To transport oxygen

• To digest food

• To produce antibodies

Where do T cells mature?

• In the spleen

• In the thymus

• In the lymph nodes

• In the skin

What is the final message of the video?

• To study hard

• To exercise regularly

• To be kind to others

• To eat healthily