What is it? Main Parts of it

Come up with 4 things that you know about the Respiratory System (or think you know). Come up with 4 questions that you have about the Respiratory System.

Respiration (Breathing) * We need oxygen to survive!!

1. What happens in our bodies when we breathe?

Take out a piece of notebook paper to draw on.

2. Why do you think our bodies cough?

2. Our body’s natural way of clearing dust and anything else in our windpipe or lungs. We have an automatic “cough reflex” in our body that detects when it’s necessary to cough. Our “cilia”, tiny little hairs in our airways, collect dirt. So when they fill up…. COUGH!!

When your body senses that there is something in your airway that shouldn't be there, you: automatically take a deep breath, close your windpipe at the epiglottis momentarily, push air against the closed epiglottis with your lung muscles to build up extra pressure, and then open your epiglottis. When the epiglottis opens, the high-pressure air comes out explosively, and the explosion helps force the matter out of your airways. You can also cough whenever you want to, whether to clear your throat or for other reasons.

3. Why do we get runny noses? Why do we sneeze?

Why Runny Noses? Why Sneezing? 3. It’s another way to protect our airways and to clean out any irritants. We produce more mucous to “flush” out the irritants. Allergies irritate our mucous membranes and make us produce an excessive amount. Sneezing: Also a reflex. Similar to the coughing reflex where cilia are filled with dirt or particles in the nose, then ACHOO!!!

4. Why is the Respiratory System a common site of infection?

Why Susceptible To Infections? 4. Because germs can easily enter through your nose and mouth.

5. What requires more oxygen? Sleeping Or Running A Mile? WHY?

More Oxygen? Sleeping or Mile Run? 5. Running a mile, because the demand for oxygen is greater.

6. What else happens in our bodies when the demand for oxygen is increased? (Hint: Think about other systems we’ve learned about…..)

Demand for Oxygen Increased….? 6. Our heart needs to pump more often in order to pump out more blood to the muscles so that they can get proper oxygen to meet the increased demand. * Also, our brain prioritizes where blood should go.

POD Question 7. Come up with a list of 4-5 activities where respiration (breathing) is essential (very important) to the activity.

Activities of Respiration

Take out your Respiratory Diagram

Air enters through the NOSE and MOUTH Lined with mucous membranes Fine hairs called cilia trap dirt

Throat Has two passageways One for air One for food (down to digestive system) “It went down the wrong tube!”……

Epiglottis A flap of tissue that closes over the trachea when you swallow.

Larynx Contains the vocal cords It grows larger during puberty Adam’s Apple (***Hum to find where your larynx is). Epiglottis to the…………

Trachea Directs air to the lungs. Long tube

Bronchi Passages through which air enters the lungs You have a left and right “bronchus” because they are like a “V” They go directly into the lungs

Lungs Oxygen is transferred into the blood and carbon dioxide is removed from the blood. (Alveoli and capillaries)

Questions???

Partner up with one person within your POD Act as if they have never heard anything about how blood gets oxygen and how the body gets out bad carbon dioxide. Draw for them on a napkin (or on notebook paper) the entire process of Oxygen/CO2 exchange. Label parts. Try not to use your notes!! Then, you pretend that they didn’t teach you anything and draw and teach the same thing to them.