1. Introduction to the Immune System-16-22

What are the components of the immune system?

• Red blood cells, platelets, and thymus

• Red blood cells, platelets, and lymph nodes

• White blood cells, platelets, and spleen

• White blood cells, platelets, and bone marrow

What is the main purpose of the innate immunity?

• To produce antibodies to fight infections

• To immediately prevent the spread of foreign pathogens throughout the body

• To regulate the body's temperature

• To provide long-term protection against specific pathogens

What are the physical barriers of the innate immunity?

• Skin and mucous membranes

• Lymph nodes and spleen

• Thymus and bone marrow

• Red blood cells and platelets

What is the pH of the skin's surface?

• 1 to 3

• 7 to 9

• 5 to 7

• 3 to 5

What is the purpose of the rapid response of the innate immune system?

• To regulate the body's pH

• To produce antibodies

• To form a single organ like the heart or liver

• To bring cells to the site of infection and fight the pathogen

What is the function of lysozyme enzyme found in sweat?

• To digest bacterial cell walls

• To regulate the body's temperature

• To fight against viruses

• To produce red blood cells

What are the organs of the immune system?

• Skin, liver, and bone marrow

• Lymph nodes, spleen, and liver

• Skin, thymus, and bone marrow

• Lymph nodes, spleen, and thymus

What is the role of normal flora in the skin?

• To produce antibodies

• To compete with pathogenic bacteria

• To cause infections

• To regulate the body's pH

Where does the development of all cells of the immune system initiate?

• Spleen

• Bone marrow

• Thymus

• Liver

What are the chemical barriers of the innate immunity?

• Oil and sweat glands

• Lymph nodes and spleen

• Thymus and bone marrow

• Red blood cells and platelets