Immune System Review

Front

The ... line of defense is the physical barrier that helps keep pathogens out of our bodies.

Back

1st, first

Front

Example of a chemical barrier (2nd line of defense): hair, skin, acid, eyelid

Back

acid

Front

The role of phagocytes is to .... pathogens.

Back

engulf, swallow, ingest

Front

Lymphocytes recognize proteins on the surface of a pathogen. What are these proteins called?

Back

antigens

Front

Lymphocytes produce .... when they detect pathogens.

Back

antibodies

Front

Pathogen

Back

a microorganism that causes disease

Front

Active immunity usually provides .... immunity than passive immunity.

Back

long-term