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Body Lab 3-5 / Week 01 / Wednesday
3/6
Week 01 · Cells to Systems

Wednesday

Organs, tissues working together
// How a body is built, from tiny to big
⏱ about 15 min

Wednesday: Organs, Tissues Working Together

Rocket holds up a sandwich made of paper. "Look, layers!" he says.

"Why build a paper sandwich?" Raven asks. "What do you notice about the layers?"

Rocket peeks inside. "Every layer is a different color."

Nova circles the model. "An organ has layers too," she says. "Each layer is a different tissue. Count them."

What is an organ?

An organ is a body part made of different kinds of tissue.

The tissues work together so the organ can do a special job.

Your stomach is an organ. It has muscle, connective, covering and nerve tissue.

Muscle and connective tissue form its wall. Covering tissue lines the inside.

Nerve tissue runs through the whole stomach.

OrganOne big job
heartPumps blood around the body
lungsBring oxygen in and send carbon dioxide out
brainActs as the boss of the body
stomachHelps break up food
MATCH THE ORGAN
  • Read the question.
  • Tap your answer.
Which organ pumps blood around the body?
Which organs bring oxygen into the body?
Which organ is the boss of the body?
A body part made of different tissues that does a special job is a what?
WHY THIS EXERCISEAn organ is made of different tissues working on one job.

Build a paper organ

You will make a layered model of a stomach wall.

  • Four sheets of paper in four different colors
  • Crayons or markers
  • Glue stick
  • Safety scissors
Safety first
Use safety scissors only.
A grown-up does any cutting that needs sharp scissors.
Keep glue away from eyes and mouth.
  1. Pick one color for each tissue: muscle, connective, covering and nerve.
  2. Glue the muscle sheet and the connective sheet together. That is the wall.
  3. Glue the covering sheet on top. That is the lining.
  4. Draw nerve lines that run through every layer.
  5. Label each layer with its tissue name.
About organsTrue or false?
An organ is made of just one kind of cell.?
The stomach has muscle tissue in its wall.?
Nerve tissue runs through the stomach.?
The lungs pump blood.?
WHY THIS EXERCISEOrgans mix several tissues. The heart pumps, and the lungs breathe.
The heart pumps ____.
The lungs bring in ____.
WHICH LAYER?
  • Read the question.
  • Tap your answer.
In your model, which layer lines the inside of the stomach?
Which layer can squeeze to help move food along?
Which part runs through every layer?

Wonderful model building! Tomorrow we zoom out and find organs working as teams called systems.

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