Follow air flow from the external nares to the alveolus.external nares --> --> nasal vestibule --> --> internal nares --> --> oropharynx --> --> trachea --> --> secondary bronchi --> --> bronchioles --> --> respiratory bronchioles --> --> alveolar sac -->
Question
Follow air flow from the external nares to the alveolus.external nares --> --> nasal vestibule --> --> internal nares --> --> oropharynx --> --> trachea --> --> secondary bronchi --> --> bronchioles --> --> respiratory bronchioles --> --> alveolar sac -->
Solution 1
Sure, here is the step by step process of air flow from the external nares to the alveolus:
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Air enters the body through the external nares, also known as nostrils.
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It then passes through the nasal vestibule, which is the most anterior part of the nasal passage.
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The air then moves through the internal nares, which are the openings at the back of the nasal cavity leading into the throat.
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From the internal nares, the air moves into the oropharynx, which is the part of the throat that is at the back of the mouth.
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The air then travels down the trachea, or windpipe.
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The trachea splits into two secondary bronchi, one for each lung.
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Each bronchus then further divides into smaller tubes called bronchioles.
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The bronchioles lead to even smaller tubes called respiratory bronchioles.
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The respiratory bronchioles end in tiny air sacs called alveoli, where the exchange of oxygen and carbon dioxide takes place.
Solution 2
Sure, here is the step-by-step path of airflow from the external nares (nostrils) to the alveoli in the lungs:
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Air enters the body through the external nares, also known as the nostrils.
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From the nostrils, the air travels into the nasal vestibule, which is the most anterior part of the nasal cavity.
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The air then moves through the nasal cavity and reaches the internal nares, also known as the choanae.
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The air then moves into the oropharynx, which is a part of the pharynx that is located behind the oral cavity.
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From the oropharynx, the air travels down into the trachea, or windpipe.
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The trachea then branches into two secondary bronchi, one for each lung.
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Each secondary bronchus then branches into smaller tubes called bronchioles.
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The bronchioles further divide into even smaller tubes called respiratory bronchioles.
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The respiratory bronchioles lead to small, grape-like sacs called alveolar sacs.
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Finally, the air reaches its destination in the alveoli, which are tiny air sacs where gas exchange occurs in the lungs.
Similar Questions
Where does gas exchange occur within the respiratory system?Multiple ChoiceIn the pharynxAt the alveoliIn the larynxIn the bronchioles
The upper airway system comprises the nose and the paranasal cavities (or sinuses), the pharynx (or throat), and partly also the oral cavity, since it may be used for breathing. The lower airway system consists of the larynx, the trachea, the stem bronchi, and all the airways ramifying intensively within the lungs, such as the intrapulmonary bronchi, the bronchioles, and the alveolar ducts. For respiration, the collaboration of other organ systems is clearly essential. The diaphragm, as the main respiratory muscle, and the intercostal muscles of the chest wall play an essential role by generating, under the control of the central nervous system, the pumping action on the lung. The muscles expand and contract the internal space of the thorax, the bony framework of which is formed by the ribs and the thoracic vertebrae. The contribution of the lung and chest wall (ribs and muscles) to respiration is described below in The mechanics of breathing. The blood, as a carrier for the gases, and the circulatory system (i.e., the heart and the blood vessels) are mandatory elements of a working respiratory system (see blood; cardiovascular system).
Collectively, the bronchi, bronchioles, larynx, nose, pharynx and trachea make up the:
The respiratory system includes the nose, mouth, throat, voice box, windpipe, and lungs.Air enters the respiratory system through the nose or the mouth. If it goes in the nostrils (also called nares), the air is warmed and humidified. Tiny hairs called cilia (pronounced: SIL-ee-uh) protect the nasal passageways and other parts of the respiratory tract, filtering out dust and other particles that enter the nose through the breathed air.The two openings of the airway (the nasal cavity and the mouth) meet at the pharynx (pronounced: FAR-inks), or throat, at the back of the nose and mouth. The pharynx is part of the digestive system as well as the respiratory system because it carries both food and air.At the bottom of the pharynx, this pathway divides in two, one for food — the esophagus (pronounced: ih-SAH-fuh-gus), which leads to the stomach — and the other for air. The epiglottis (pronounced: eh-pih-GLAH-tus), a small flap of tissue, covers the air-only passage when we swallow, keeping food and liquid from going into the lungs.The larynx, or voice box, is the top part of the air-only pipe. This short tube contains a pair of vocal cords, which vibrate to make sounds.
The trachea leads to the:*1 pointbronchiolesesophaguspulmonary vesselbronchiTrue/False - Air passes through or around the trachea, epiglottis, pharynx, and larynx to reach the lung.
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