Questions and Answers
What is the largest unpaired laryngeal cartilage?
thyroid cartilage
The smallest respiratory bronchioles subdivide into thin airways called?
alveolar ducts
The right lung has ________ lobes, and the left lung has ________ lobes.
three, two
What is the amount of air that is moved between the atmosphere and alveoli in 1 minute called?
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Pulmonary ventilation (breathing) can also be described as?
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What does the lower respiratory tract include?
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In the correct order, terminal bronchioles divide into?
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Elevation of the ribs increases thoracic cavity?
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What does expiration involve?
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The respiratory membrane, across which gas exchange occurs, is formed by the wall of the respiratory bronchiole and the pulmonary capillary.
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As the diaphragm relaxes, it is depressed (moves inferiorly).
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Bronchioles have a proportionately thicker layer of smooth muscle than bronchi and contraction of this smooth muscle narrows the diameter of the bronchiole, referred to as bronchodilation.
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A chronic condition known as _______ is characterized by episodes of bronchoconstriction coupled with wheezing, coughing, shortness of breath, and excess pulmonary mucus.
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The trachea extends inferiorly through the neck into the mediastinum and lies immediately posterior to the esophagus and the sternum.
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The vestibular folds ('false vocal cords') assist the true vocal cords in sound production.
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What bone does not contain a paranasal sinus?
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What structure is also known as the 'voice box'?
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Study Notes
Laryngeal Cartilage
- The largest unpaired laryngeal cartilage is the thyroid cartilage.
Respiratory Structure
- Smallest respiratory bronchioles subdivide into alveolar ducts.
Lung Lobes
- The right lung comprises three lobes, while the left lung has two lobes.
Pulmonary Ventilation
- Pulmonary ventilation refers to the total air exchanged between the atmosphere and alveoli within one minute.
- It encompasses the movement of air into and out of the lungs.
Lower Respiratory Tract
- The larynx is part of the lower respiratory tract.
Bronchiole Division
- Terminal bronchioles sequentially divide into respiratory bronchioles, then into alveolar ducts, and finally into alveolar sacs.
Thoracic Cavity Expansion
- Elevating the ribs increases the width of the thoracic cavity.
Expiration Mechanism
- Expiration relies on the elastic recoil of the lungs.
Respiratory Membrane
- The respiratory membrane, critical for gas exchange, is not solely formed by the respiratory bronchiole and pulmonary capillary wall.
Diaphragm Function
- The diaphragm, when relaxed, does not move inferiorly; contrary to what is stated.
Bronchioles Smooth Muscle
- Bronchioles possess a thicker smooth muscle layer compared to bronchi. Contraction leads to narrowing of bronchioles, a process referred to as bronchoconstriction, not bronchodilation.
Asthma Condition
- Asthma is a chronic condition characterized by bronchoconstriction, wheezing, coughing, shortness of breath, and excess pulmonary mucus.
Trachea Position
- The trachea does not lie immediately posterior to the esophagus and sternum as previously claimed.
Vocal Cords
- Vestibular folds, known as "false vocal cords," do not assist true vocal cords in sound production.
Paranasal Sinuses
- The mandible is the only bone that does not contain a paranasal sinus.
Voice Box
- The larynx is commonly referred to as the "voice box."
Studying That Suits You
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Description
Test your knowledge of respiratory anatomy with these flashcards from Chapter 23. Each card highlights key terms and definitions related to the laryngeal cartilage and lung structure. Ideal for students looking to reinforce their learning in human anatomy.
