The respiratory mucosa is defended against pathogens by mucus coating the air passages that traps particles. cilia of epithelium moves mucus away from the lungs. tonsils and mucosa-associated lymphoid tissue (MALT). alveolar macrophages that phagocytize particles that have reached the alveoli. all of these.
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Choose the correct answer from the following words. Carbon dioxide Oxygen Abdomen Cilia Windpipe alveoli 1. The lungs are the main organs of the respiratory system. When you breathe in, you take in _________ from the air. 2. When you breathe out, you get rid of _________.3. The long tube by which air is carried to and from the lungs is called the trachea, or ______.4. The diaphragm is a dome-shaped sheet of muscle that separates the chest area from the ______.5. The very fine hairs called ______ cover the inner surface of your nose to help collect dust, bacteria, and mucus and keep the nasal passages clean.
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In the respiratory system, what type of epithelium is most common in the respiratory zone and why? Stratified squamous to allow gas exchange Pseudostratified ciliated columnar to allow gas exchange Pseudostratified ciliated columnar to move air for greater contact with exchange surface Simple squamous to allow gas exchange Simple squamous to move air for greater contact with exchange surface Stratified squamous to move air for greater contact with exchange surface
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Which of the following components of the respiratory tract does not contain muscular tissue? a. trachea b. bronchioles c. bronchi d. alveoli
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