Immune System Functions and Processes

The video explains how the immune system protects against pathogens. It highlights the role of white blood cells in ingesting and destroying pathogens through phagocytosis, the production of specific antibodies, and the neutralization of toxins by antitoxins. The immune system's ability to remember pathogens for future protection is also discussed.

What is the primary role of the immune system?

• To aid in digestion

• To regulate body temperature

• To protect against pathogens

• To produce energy for the body

What can happen if pathogens enter the bloodstream?

• They can be stored in the liver

• They can multiply and damage healthy tissue

• They can be immediately destroyed by red blood cells

• They can be converted into nutrients

What are the two main functions of the immune system?

• Regulating blood pressure and heart rate

• Digesting food and absorbing nutrients

• Producing hormones and regulating metabolism

• Destroying pathogens and protecting against future invasions

What process do white blood cells use to ingest and destroy pathogens?

• Phagocytosis

• Fermentation

• Photosynthesis

• Osmosis

What is the term used for the process where white blood cells ingest pathogens?

• Digestion

• Phagocytosis

• Ingestion

• Absorption

What is the role of antibodies in the immune system?

• To provide energy to cells

• To stick to pathogens and trigger their destruction

• To break down food in the stomach

• To transport oxygen in the blood

Why are antibodies considered specific?

• They can target any pathogen

• They are only effective against one type of pathogen

• They can change shape to fit different pathogens

• They are produced by all cells in the body

How do antibodies provide long-term protection?

• By being stored in the liver

• By changing their structure over time

• By remaining in the blood for a long time

• By being produced in large quantities

What do white blood cells produce to neutralize toxins?

• Vitamins

• Enzymes

• Antitoxins

• Hormones

How do antitoxins protect the body?

• By increasing blood flow

• By producing antibodies

• By sticking to toxins and preventing cell damage

• By breaking down food particles