1. READ! HOMEROOM

2. Brainstorm: 1. How does the skeletal system maintain homeostasis in the body? 2. How does the muscular system maintain homeostasis in the body? WARM-UP – PAGE 103

3.  Functions to get oxygen from the environment and remove carbon dioxide and other wastes from your body. THE RESPIRATORY SYSTEM

4.  When you take in a breath:  20%Oxygen  <1% Carbon Dioxide  80% Nitrogen WHAT YOU BREATH IN

5.  oSpeaking  oClear particles from the nose and throat  oSighing  oYawning  oCrying  oSneezing  oCoughing  oHiccups WHAT ELSE DOES IT DO FOR THE BODY?

6.  High levels of carbon dioxide will damage/ destroy cells  Cells need proper levels of both (Homeostasis!)  If levels of C02 or 02 change, your brain tells you to breath faster or slower! EXCHANGE OF CARBON DIOXIDE AND OXYGEN

7.  Cells use oxygen in chemical reactions to make energy!  Cellular respiration uses the digestive and circulatory systems  Glucose(sugar) is also needed in CR  Cells use oxygen and glucose to make energy!  Occurs in the mitochondria!!!!!!!!!!! CELLULAR RESPIRATION

8.  prevent food and liquids from entering the lungs EPIGLOTTIS

9.  tube surrounded by cartilage rings TRACHEA

10.  carry air into each lung BRONCHIAL TUBES

11.  Two large organs on either side of the heart where gas exchange (respiration) takes place. LUNG

12.  exchange the gases in the lungs ALVEOLI

13.  Diaphragm: contracts and moves down, allowing the lungs to expand DIAPHRAGM

14.  Complete each activity for one minute.  THEN count your breaths for one minute.  Do not take exaggerated breaths… just breathe normally.  The teacher will time you for each minute, make sure you are paying attention so you don’t fall behind!  Answer the 3 questions at the bottom of the paper. BREATHING EASY LAB P. 105

15.  http://www.brainpop.com/health/bodysystems/respiratorysys tem/ RESPIRATORY SYSTEM BRAINPOP