Line of Defense

2nd line of defense includes

• Skin

• Mucous Membranes

• White Blood Cells

• B Cells

• T Cells

1st line of defense includes

• Skin

• Mucous Membranes

• White Blood Cells

• B Cells

• T Cells

Which one is a way the body defends against a pathogen?

• Fever

• Stomach Acid digesting

• White Blood Cells fighing

• All of these are correct

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

Tags

NGSS.MS-LS1-3

What is the body's first line of defence against infection?

• Physical barriers

• White blood cells

• Blood plasma

• Red blood cells

What is the main purpose of the immune system?

• support the body through bones and muscles

• get rid of waste from the body

• protect the body from pathogens

• move blood through the body

 Liz notices that shortly after cutting her arm accidentally the area around the cut is turning red and feeling hot.  Which immune system defense is Liz experiencing?  

• inflammation

• white blood cell clotting

• skin

• fever

What is the primary function of the body's first line of defense?

• To prevent pathogens from entering the body

• To destroy pathogens inside the body

• To produce antibodies

• To remember past infections

Which of the following is NOT part of the body's first line of defense?

• Skin

• Mucous membranes

• Stomach acid

• White blood cells

How do mucous membranes contribute to the body's defense system?

• By producing antibodies

• By trapping pathogens

• By attacking pathogens directly

• By remembering past infections