Questions for Students
Question: What are the roles of macrophages and neutrophils in the immune system?
- they are the body’s first responders to infection
- they fight bacterial infections
- they “eat” bacteria
Question: Describe the process of transmigration of monocytes.
- monocytes flow in the blood vessels
- selectins help monocytes to “slow down”
- ICAMs help monocytes to “stop”
- ICAMs help monocytes to move through the blood vessel wall and into the connective tissue
- once a monocyte has entered the connective tissue, it is referred to as a macrophage
Question: Describe how the body uses chemical signals to find the site of infection.
- macrophages and neutrophils find the site of infection by following a chemical trail
- macrophages follow a chemical trail of C3a’s
Question: Describe how the body uses chemical markers to recognize enemies.
- macrophages and neutrophils recognize LPS as an indicator of bacteria
Question: Describe how macrophages “call” neutrophils for “back up.”
- they release a chemical signal of CXCL8 molecules