Presentation on theme: "Topic: Respiratory System"— Presentation transcript:
1 Topic: Respiratory System Aim: Describe the parts & functions of the Respiratory System.Do Now: Why do we breathe?HW:
2 Did you know…Every minute you breathe in 13 pints of air.The blast of air being released during a cough comes out speeds greater than 100 miles per hour.During sneezing, secretions of the nose are being expelled as droplets (more than 6,000) up to 10 feet at very high speeds (up to 40 miles per hour).People tend to get more colds in the winter because we're indoors more often and close to other people. When people sneeze, cough and even breathe, germs go flying!
3 GAS EXCHANGE of O2 & CO2 bw organism & environment FunctionGAS EXCHANGE of O2 & CO2 bw organism & environment
9 Usually a sneeze is started by tickling or irritation of the nerve endings of the membranes lining the inside of your nose. The sneezing reflex is useful in blowing out of your nose any dust particles causing irritation. It is an involuntary, sudden, violent, audible expulsion of air through the nose and mouth.
30 Coughing is an important part of the body’s defense system Coughing is an important part of the body’s defense system. It forcefully propels unwanted invaders up and out of the body. Coughing is a reflex action started by stimulation of nerves in the lining of the respiratory tubes we use to breathe. The blast of air being released comes out scrubbing and clearing the airway of dust, dirt or excessive secretions.Maindex
45 Brain MEDULLADetects the level of CO2 in the blood
46 Let’s summarize: Explain the function of the respiratory system. List the structures air passes through when you inhale.Explain the function of the ciliated mucus membrane.Identify the structure that produces sound.Why are the trachea and bronchi lined with cartilage?Where does gas exchange occur?Describe the process of gas exchange.Describe how the diaphragm helps you breathe.Which gas regulates breathing rate?
48 Review: Put the following structures in order to show the path of air when inhaling. LarynxBronchiTracheaAlveoliNasal cavityBronchiolesPharynx
49 In sensitive people, asthma symptoms can be triggered by breathing allergens. Common allergen triggers include:Animals (pet hair or dander)DustMoldPollenChemicals in the air or in foodTobacco smokeOther asthma triggers include:Changes in weather (most often cold weather)ExerciseRespiratory infections, such as the common coldStrong emotions (stress)
50 Bronchitis is an inflammation of the bronchial tubes Bronchitis is an inflammation of the bronchial tubes. It causes a cough that often brings up mucus, as well as shortness of breath, wheezing, and chest tightness. There are two main types.With chronic bronchitis, the inflamed bronchi produce a lot of mucus which leads to cough and difficulty getting breathing. It is most often cased by cigarette smoke. Breathing in other fumes and dusts over a long period of time may also cause chronic bronchitis. This a long-term condition that keeps coming back or never goes away completely.Acute bronchitis can be caused by viruses or bacteria. These viruses spread through the air when people cough, or through physical contact (for example, on unwashed hands). Most cases of acute bronchitis get better within several days.