2. RESPIRATORY SYSTEM

3. Why, oh why? Or else we’ll die! Our Respiratory System provides our body with __________ for the purpose of ____________________. The energy (or ______) produced during respiration is used for ____________ processes and to maintain ____________ (dynamic equilibrium). In addition, this system allows us to expel _________________. Oxygen Aerobic Respiration ATP Metabolic Homeostasis Carbon Dioxide

4. How do other organisms Respire? Stomates: Openings on the underside of leaves lets plants exchanges gases. Skin: Worms exchange gases through their moist skin. **If worms dry out they can’t respire!** Fish: Use gills to absorb oxygen from the water and release carbon dioxide.

5. Plant Respiration Lenticles are small holes in woody stems of plants that allow for gas exchange. 3 Places Plants Exchange Gases: Roots Stomates Lenticles

6. Human Respiratory System 3 h 1212 Nose Mouth Nasal Cavity

7. The Nasal Cavity has space which_____ the air, mucus membranes which the air and nose hairs which the air. warms moistens filters

8. Human Respiratory System 3 h 1212 Nose Mouth Nasal Cavity 4 5 Larynx Pharynx epiglottis

9. How do you speak, choke and/or have food come out your nose? Eww!! Uvula, but what’s that hanging off it? Adam’s apple Click for cool link!cool Beatboxer Clip

10. Human Respiratory System 3 h 1212 Nose Mouth Nasal Cavity 4 5 Larynx Pharynx epiglottis 6 7878 8 Trachea Bronchi

11. Bronchi and trachea: Rings of cartilage to keep open, mucus and beating hairs to clear passageway

12. Human Respiratory System 3 h 1212 Nose Mouth Nasal Cavity 4 5 Larynx Pharynx epiglottis 6 7878 8 Bronchi Trachea Lung Bronchi 9 10 Bronchiole Alveoli

13. Lungs contain bronchioles and alveoli. bronchiole1. 2.alveoli 3.capillary Alveoli are thin, one cell layer thick pockets surrounded by tiny blood vessels (called capilaries). Here oxygen diffuses into the blood. Also carbon dioxide diffuses into the alveoli to be exhaled!

14. Human Respiratory System 3 h 1212 Nose Mouth Nasal Cavity 4 5 Larynx Pharynx epiglottis 6 7878 8 (same) Trachea Lung Bronchi 9 10 Bronchiole Alveoli 11 Diaphragm

15. So……why do we breathe? And how? We mostly breathe to rid ourselves of CO 2 Inhale: ribs up and out, diaphragm down. Exhale: ribs down, diaphragm up.

16. Respiratory Disorders: Allergies Allergies are caused by benign (non- harmful) substances causing a histamine response in the body. Histamines cause: sneezing runny nose watery eyes

17. Respiratory Disorders: ASTHMA Causes of asthma: -Genetic -Exercise -Air contaminates (smog, pollen, cigarettes, etc) What happens? -Muscles around the bronchioles tightens and won’t relax -Airways swell -Mucus is produced This means there is less space in the airway and it becomes difficult to get enough oxygen in.

18. Respiratory Disorders: BRONCHITIS Infection and inflammation caused by: virus, bacteria, asthma, smoking Feels Like

19. Smoking: The Self Inflicted Respiratory Nightmare!

20. Smoking causes: Bad hair! Bad stink! Bad teeth! Bad skin! ADDICTION!!

21. That was then… This is now! Do you know this guy?

22. Smoking causes: EMPHYSEMA Alveoli are overstretched and lose their elasticity. The walls between alveoli also break down, leaving less surface area. It feels like you can’t get enough air.

23. Smoking causes Cancer laryngectomy YouTube Clip