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MAIN FUNCTION OF THE RESPIRATORY SYSTEM: 1. 2. The respiratory system works with the circulatory system to and . THE HUMAN RESPIRATORY SYSTEM PASSAGE OF AIR – THE BEGINNING Air enters the respiratory system through the and . It then passes through the throat (which is made up of the and ). A structure called the covers the top of the trachea during swallowing to prevent and and ____________________________________________ THE TRACHEA The trachea (also known as the ) is supported by rings of the trachea open. Cells covering the trachea and bronchi are covered with . The mucus and cilia trap . The cilia which keep and layers of LARYNX The (also known as the voice box) is located at the top of the As air passes through the larynx, the vibrate which produce . . PASSAGE OF AIR CONTINUED – BRONCHI AND BRONCHIOLES The trachea divides into two branches called . The bronchi divides into another . These are tubes that carry air into the of tubes called the GAS EXCHANGE: ALVEOLI At the end of bronchioles are tiny grape-like called . Alveoli are structures with that are surrounded by (tiny blood vessels) Alveoli are the site of . GAS EXCHANGE: MOVEMENT OF GASES The concentration of oxygen in blood flowing through the lungs < oxygen in the air in alveoli This ensures that oxygen always and is carried to the tissues. Oxygen then diffuses from _____________________ into the ______________________ At the same time, the from body tissues are picked up by the blood and ______________________ where it diffuses out into the air in the alveoli and is . BREATHING Inhalation: Exhalation: Breathing uses muscles that move the and the ______. Diaphragm: large sheet of _ __ underneath the lungs that and _____ When we inhale, our chest _ _ and our diaphragm _ __ (lowers / flattens). When we exhale, our chest __ and our diaphragm __(rises / dome shaped). CONTOL OF BREATHING Breathing is mostly (automatic). It can be temporarily overridden (for example when we talk or hold our breath) but eventually the automatic system takes over. Breathing is controlled by a part of the brain that detects . As the , the brain sends signals to the , , and heart. This will increase the and cause the heart to . DISORDERS OF THE RESPIRATORY SYSTEM RESPIRATORY DISORDER SARS __________________ __________________ __________________ TUBERCULOSIS CAUSES AND SYMPTOMS Flu-like symptoms: ASTHMA Air-borne, _________________ and infectious disease ______________ grows in the lungs and can spread to other parts of the body Symptoms: fever, cough, ____________, ___________ and chest pain Allergic response to __________________ that affects _________________________ Symptoms: Narrowing of _____________, extra ___________ produced and shortness of ____________ Your Work: Read 3.6 Complete #1-6 DIAGNOSIS / TREATMENT Diagnosis: Chest X-Ray that shows signs of __________________ Treatment: anti-viral medication Diagnosis: _____________________ Testing Lung Fluid TB Test Treatment: Oral Medication Diagnosis: Chest X-Ray Treatment: ____________ are used to _________ the size of the respiratory passage