Welcome Read a book or work on an

Welcome • Read a book or work on an assignment.

Homeostasis Your B ody’s Balanc ing Act

Add to Table of Contents 10/1/13 What I Think About Homeostasis 10/1/13 Homeostasis Notes 21 22

Essential Question • How does the human body maintain homeostasis?

Activity #1 • Stand on one foot and try to balance. • Do not use any furniture to help you.

Record Observations • Record your observations – “The leg I was standing on was shaking. ” – “My foot started to hurt. ”

Activity #2 • Measure your pulse for 15 seconds. • Multiply this number by 4. • Record this number in your notebook as “Resting Heart Rate = #”

Activity #2 • Beside your desk, do as many jumping jack as you can within one minute. • SAFETY: Make sure you have enough room and will not hit any one. • Measure your pulse for 15 seconds. • Multiply this number by 4. • Record this number in your notebook as “Active Heart Rate = #)

Homeostasis • Sheldon Cooper’s definition of homeostasis. • “A system’s ability to regulate its internal environment” • In other words, homeostasis is how your body keeps its internal environment the same.

Internal Environment? Your body’s internal environment is: Temperature Amount of water/food Amount of Oxygen etc….

A Balancing Act • Your body “balances” to keep everything the same inside.

Brainstorm • Brainstorm ways that your body maintains its internal environment. • Think about temperature, water, food, and oxygen. • Write down your ideas.