Immune System Lesson I

What is the Immune system?

•  The body's defense system
• A system that gives support and structure 
• A system that helps you breathe
• None of the above

 Like all other body systems, the immune system helps the body maintain homeostasis.  Which statement best describes how the immune system does this?  

• it protects other organs and tissues from infection and disease
• it breaks down food to provide cells with nutrients
• it gathers information through the senses and controls all other body systems
•  it transports oxygen and carbon dioxide

What is the first barrier against disease?

• White blood cells
• Red blood cells
• the skin
• leucocytes 

What do scientists call bacteria and viruses that can make people sick?  

• diseases
• vaccines
• antibodies
• pathogens

Diseases are passed from human to human by these four types of germs: 

• Viruses, influenza, HIV, and vaccines
• Viruses, bacteria, fungi, and parasites
• Viruses, cancers, mutagens, and DNA
• Viruses, blood, pollutants, and symptoms

Which of the following is a non-specific response?

• Fever
• Red, itchy eyes that may be crusted shut
• Signs that is related to one antigen

Cells that ingest pathogens are

• plasma cells
• phagocytic cells
• helper T cells
• antibodies

First recognizes foreign body and eats it and displays it to the other cells

• Macrophage
• T Cells
• B Cells

What is phagocytosis?

• WBCs
• When cells eat other cells
• When a cell collapses
• When a cell releases nutrients

Which of the following is part of the immune system. Select all that apply.

• Tonsils and adenoids

• Spleen

• Thymus

• Bone Marrow