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20 Cards in this Set
- Front
- Back
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What does the Conducting Zone consist of?
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Nose
Pharynx Trachea Bronchi Bronchioles Terminal Bronchioles |
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Where is cartilage present in conducting zone?
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only in trachea and bronchi
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Fxns of conducting zone?
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warms and humidifies air
Filters air |
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What do the walls of the conducting zone contain?
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smooth muscle
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What makes up the Respiratory Zone?
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Respiratory Bronchioles
Alveolar Ducts Alveoli |
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What cells line the conducting zone? how far do they extend?
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Pseudostratified Ciliated Columnar cells extend to resp. bronchioles
Goblet Cells stop at terminal bronchioles |
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Types of Pneumocytes? location? fxn?
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Type 1 (97%)
line alveoli thin for optimal gas diffusion Type 2 secrete surfactant cuboidal and clustered Serve as precursors to type 1's and other type 2's |
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What are Clara Cells? fxn?
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Nonciliated, columnar cells w/ secretory granules
Secrete component of surfactant Degrade Toxins Act as reserve cells |
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What is indicative of fetal lung maturity?
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Lecithin:Sphinomyelin ratio > 2.0 in amniotic fluid
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how are bronchopulmonary segments arranged?
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Each one has a tertiary bronchus and 2 arteries (bronchial and pulmonary) in the center. Veins and lymphatics drain along the borders
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What is up with lobes in the left vs right lung?
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Right Lung has 3 lobes (sup, mid, inf)
Left Lung has 2 Lobes (sup, inf) and 1 Lingula |
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Where inhaled foreign objects usually end up?
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Right lung b/c right main stem bronchus is wider and more vertical than left
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If you aspirate a peanut, where will it end up if you're upright when you aspirate it? supine when you aspirate it?
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Upright: lower portion of right inferior lobe
Supine: superior portion of right inferior lobe |
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What takes the place of the middle lobe for the left lung?
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The heart
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What is the relationship between pulmonary artery and bronchus at each lung hilus?
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RALS
Right anterior Left Superior |
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Structures perforating Diaphragm and at what vertebral level?
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IVC at T8
Esophagus and Vagus N at T10 Aorta, Thoracic Duct, and Azygous Vein at T12 |
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What innervates the Diaphragm?
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C3,4,5---> Phrenic Nerve
3,4,5 keep the diaphragm alive |
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Where does diaphragm pain end up?
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Shoulder
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What muscles are involved in Quite Respiration?
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Inhalation: diaphragm
Exhalation: passive |
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What muscles are involved in Exercise Respiration?
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Inspiration:
External Intercostals Scalene Muscles Sternomastoids Expiration: Rectus Abdominis Internal and External Obliques Transversus Abdominis Internal Intercostals |
