THE IMMUNE SYSTEM

Cast of Characters

Peasants…Watchman…Foot Soldiers…Green Berets…Navy Seals…Enemy…

Skin, hair, mucusHistamineWhite Blood CellsB CellsT CellsBacteria, Virus, Parasite

ACT I

The Enemy Arrives

A Pretty Day in the Field…

Until the ENEMY arrives.

A Pathogen (disease causing agent) enters in through the nose, where it will meet it’s first battle.

First Line of Defense

Peasants working in the field try their best to hold off the enemy

Hair: will work to trap the invader and push it out of the body

Mucus: will work to trap invader

Sends Out a Warning to the Rest of the City

The city guard sends out a warning to the rest of the city

Histamine: causes swelling, redness, pain, and heat

ACT II

Help Arrives

We need Back-Up!

Foot Soldiers arrive to give back up as the enemy begins to multiply.

White Blood Cells: surrounds invader and engulfs it trying to prevent the bacteria from invading more cells

ACT III

Special Forces Arrive

Send in the Specialized Forces

Green Berets arrive to use specialized information to attack the enemy.

B cells: release ANTIBODIES

Proteins that recognize bacteria and viruses

More Forces!

Navy Seals arrive to bring their own set of specialized information

T Cells: – Killer T Cells: eats

bacteria or viruses– Helper T Cells:

creates memory of bacteria or virus

ACT IV

Battle Continues

Will It Ever End???

More soldiers, more green berets, more navy seals!

White blood cells, B cells, and T cells continue to attack the bacteria.

ACT V

Resolution

Possible Outcomes

Good guys win… Health

Bad guys win… Death

Chronic Illness… the Battle Continues

The End