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Body Lab 3-5 / Week 11 / Friday
5/6
Week 11 · Body Defenders

Friday

The whole defense team
// Skin, tears, mucus and white blood cells
⏱ about 15 min

Friday: The Whole Defense Team

Rocket unrolls a long paper banner. "Defender Hall of Fame!" he says. "But I mixed up the order."

Raven studies it. "What do you notice? Which defender does a germ meet first?"

Nova floats to one end of the banner. "Start outside the body," she says. "Then travel in."

Rocket grabs his tape. "Time to fix it. Mistakes make great second drafts!"

Defenders from outside to inside

DefenderWhereHow it helps
SkinAll over the outsideBlocks germs like a wall
TearsEyesWash away germs and dust
Mucus and nose hairsNoseTrap dust and germs
White blood cellsBlood, spleen, bone marrowGobble up germs and remember them
Your habitsEverywhere you goHandwashing, sleep, food and exercise
WHICH DEFENDER?
  • Read the question.
  • Tap your answer.
A speck of dust floats into your eye. Which defender helps?
You breathe in dusty air. Which defender traps the dust?
A germ slips inside the body. Which defender gobbles it up?
Germs are on your hands before lunch. Which defender is up to you?
DEFENDER HALL OF FAME, OUTSIDE TO INSIDE
  • ?Lymphocytes help the body remember that germ.
  • ?Mucus traps germs in the nose.
  • ?A germ slips inside the body.
  • ?Skin blocks germs.
  • ?White blood cells gobble it up.
WHY THIS EXERCISESkin and mucus stop most germs, and white blood cells handle the rest and remember.
StatementTrue or false?
Skin blocks germs like a wall.?
Tears trap germs in the nose.?
White blood cells can remember germs.?
Your habits can help your defenders.?
WHY THIS EXERCISETears guard the eyes, mucus guards the nose, and habits help the whole team.

Every system helps

The defenders do not work alone.

Blood from the heart carries white blood cells everywhere.

Bone marrow inside bones makes some white blood cells.

Your brain makes your muscles sneeze when your nose needs clearing.

Body systems are a team, just like Rocket, Raven and Nova.

The heart pumps ____ that carries white blood cells.
Germs are washed away with soap and ____.
A wall of ____ covers the whole body.
What do we call the body's whole defense team? Type two words.
WHY THIS EXERCISEThe immune system is the body's defense team.
Try it
Teach a family member the five handwashing steps.
See if they can say them back in order.

Outstanding work this week! Tomorrow is Body Lab Day: a glitter germ test at the sink.

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