Second line of defence

What do white blood cells do?

• Seek out and kill all living tissue
• Seek out and kill pathogens
• Transport food around the body
• Repair cuts and injuries

Tags

NGSS.MS-LS1-3

How do phagocytes kill pathogens?

• By consuming them
• By wrapping them up in protein strings
• By releasing antigens
• By ANY MEANS NECESSARY 

The second line of defence includes

• Inflammation, during which cells release histamine

• Activation of cytotoxic T cellsThis is a wrong answer

• Dendritic cells travelling to the lymph nodesThis is a wrong answer

• Chemical barriers like acids, enzymes, and other secretions.This is a wrong answer Chemical barriers like acids, enzymes, and other secretions.This is a wrong answer

The inflammatory response involves:

• Swelling

• Pus

• Red skin

• All of the above

A foreign invaded to the body can also be called:

• bacteria

• pathogen

• antibody

• white blood cell

What is an antigen?

• The lining of the body opening

• The first line of defence that stops pathogens from entering

• Non-self chemicals that trigger your immune responce

• Helps filter and remove foreign objects

Non-specific defences

• First line of defence

• Second line of defence

• Third line of defence

• First and second line of defence

A sign that shows your second line of defence has been triggered

• Redness

• Swollen

• Inflammation

• All of the above

Special types of blood cell that engulf and destroy pathogens

• pathogens

• virus

• phagocytes

• microbes

The action of engulfing and destroying materials

• phagocytosis

• defence system

• microbial distruction