Body Systems Interact for Defense

The immune system..

• Carries oxygen around the body

• Protects us from disease

• Transports nutrients around the body

• does nothing

Physical barriers include:

• Stomach acid

• Mucous and hair

• Skin

• Tears

What 3 microbes does our body defend us from?

• Bacteria, virus, pathogens

• Microbes, virus, fungi

• Virus, fungi, bacteria

• Pathogen, fungi, bacteria

What do we have in our tears which help protect us against infections?

• Acid

• Mucous

• Hairs

• Chemicals

We have microbes in our gut to protect us

• TRUE

• FALSE

Which type of cell helps us fight infection

• Red Blood Cells

• White blood cell

• Plasma

• All of the cells

What do phagocytes do to protect us?

• They scare away infection

• They say mean things to the infection

• They break down the infection

• They engulf (swallow) and digest the microbe

What do lymphocytes do to protect us?

• Produce antigens

• Produces phagocytes

• Produce antibodies

• Produce pathogens

microbes are engulfed (swallowed) and digested by

• Antibodies

• Lymphocytes

• Phagocytes

• Red blood cells

Antibodies are produced by

• Lymphocytes

• Phagocytes

• Pathogens

• Chemicals