Warm up (3 minutes)

1. What are some examples of things that the body needs to keep the same or constant?

2. Put these things in order from smallest to largest:

Organ System, Cell, Organelle, Organ, Tissue

2

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Topic 2.2

Homeostasis, p. 8

Today’s Plan:

1. Warm Up (3 min)

2. Note Taking

3. Homeostasis Video

4. Homeostasis Stations

5. Exit Slip

Today’s Objective:

Define homeostasis and identify

examples of homeostatic

regulation in the human body.

FOCUS QUESTION: What is homeostasis?

1. What things does your body need to keep the same or constant in order to keep you alive?

2. Homeostasis Organisms maintain a stable internal environment (also called dynamic equilibrium)

3. For a unicellular organism, homeostasis means that the cell needs to be able to…

Maintain constant levels of water and nutrients, and respond to their environment.

4. Multicellular organisms maintain homeostasis by… Developing specialized cells and organ systems that communicate and work together.

5-7. Homeostasis Video: Practice your thinking Before, During, and After strategy!

In order to learn more about the homeostasis, you will identify how

different types of cells work together to help the body maintain homeostasis in 6 stations…

Homeostasis Scenarios For each Station below, identify how that type of specialized cell helps the body to maintain homeostasis.

Station 1

Station 2

Station 3

Station 4

Station 5

Station 6

Reflect

1. How well do you undestand what homeostasis is? Hold up a finger 1-5.

2. Do you have any questions about homeostasis?

This stopwatch is timing how long it takes you to get ready. It will stop after everyone

- has completed a warm up - has their binder in front of them - has today’s work - is sitting in their assigned seat - has given 3 seconds of silence.

Your class will gain points based on how quickly this happens.

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Announcements

Exit Slip (5 min) 1. Return to your assigned seat

2. Complete the exit slip

3. Clean up your workstation

4. Secure all handouts in your binder

5. Put your binder away.

1. Give one example of how a specialized cell helps the body maintain homeostasis.

2. In your own words does homeostasis mean?