Podcast
Questions and Answers
What is the role of intrapleural pressure (Pip) in the respiratory system?
What is the role of intrapleural pressure (Pip) in the respiratory system?
- To assist in the mechanics of inspiration and expiration
- To directly control the volume of the thoracic cavity
- To regulate the composition of pleural fluid
- To keep the lungs inflated by maintaining negative pressure (correct)
What is the purpose of pleural fluid in the respiratory system?
What is the purpose of pleural fluid in the respiratory system?
- To neutralize pathogens present in the alveolar space
- To directly participate in gas exchange within the alveoli
- To regulate the expansion and contraction of the bronchioles
- To cushion the lungs and protect them from physical damage (correct)
What condition can result from the accumulation of fluid in the pleural cavity?
What condition can result from the accumulation of fluid in the pleural cavity?
- Pneumothorax (correct)
- Atelectasis
- Lung collapse from recoil
- Pleurisy
During an asthma attack, what happens to the bronchioles?
During an asthma attack, what happens to the bronchioles?
Which structure in the respiratory system contracts during coughing?
Which structure in the respiratory system contracts during coughing?
Which part of the respiratory system is composed of ciliated pseudostratified epithelium with goblet cells?
Which part of the respiratory system is composed of ciliated pseudostratified epithelium with goblet cells?
In the conducting zone of the lower respiratory system, what replaces cartilage as branching continues?
In the conducting zone of the lower respiratory system, what replaces cartilage as branching continues?
Which type of epithelium is typically found in the respiratory zone of the lungs?
Which type of epithelium is typically found in the respiratory zone of the lungs?
What type of blood vessels provide oxygenated blood from the aorta to lung tissue?
What type of blood vessels provide oxygenated blood from the aorta to lung tissue?
'Going down the wrong pipe' in the respiratory system usually triggers a cough reflex due to irritation of which structure?
'Going down the wrong pipe' in the respiratory system usually triggers a cough reflex due to irritation of which structure?
Flashcards
Pneumothorax
Pneumothorax
A condition caused by the accumulation of fluid in the pleural cavity, surrounding the lungs.
Pleura
Pleura
The layer of tissue lining the inside of the chest cavity, creating a space between itself and the lung.
Intrapleural pressure (Pip)
Intrapleural pressure (Pip)
The pressure within the pleural cavity, always slightly negative compared to atmospheric pressure, which keeps the lungs inflated.
Pleural fluid
Pleural fluid
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Epiglottis
Epiglottis
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Trachealis muscle
Trachealis muscle
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Trachea epithelium
Trachea epithelium
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Bronchiole constriction in Asthma
Bronchiole constriction in Asthma
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Conducting zone of the respiratory system
Conducting zone of the respiratory system
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Respiratory zone of the respiratory system
Respiratory zone of the respiratory system
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Study Notes
Respiratory System Mechanics
- Intrapleural pressure (Pip) helps to expand the lungs during inhalation and deflate them during exhalation.
Pleural Fluid Function
- Pleural fluid reduces friction between the lungs and chest cavity, allowing for smooth movement during breathing.
Pleural Cavity Complications
- Accumulation of fluid in the pleural cavity can lead to pleural effusion, a condition that impairs lung expansion.
Asthma Attack Effects
- During an asthma attack, bronchioles constrict, reducing airflow and increasing resistance to breathing.
Coughing Mechanism
- The diaphragm contracts during coughing, forcing air out of the lungs to expel irritants.
Respiratory Tract Epithelium
- The trachea and bronchi are lined with ciliated pseudostratified epithelium with goblet cells, which helps to filter and humidify the air.
Conducting Zone Anatomy
- As the bronchi branch, smooth muscle replaces cartilage to provide structural support.
Respiratory Zone Characteristics
- The respiratory zone of the lungs is composed of simple squamous epithelium, which allows for efficient gas exchange.
Lung Blood Supply
- Oxygenated blood from the aorta is delivered to lung tissue through bronchial arteries.
Cough Reflex Trigger
- Irritation of the epiglottis, which separates the trachea from the esophagus, usually triggers a cough reflex when food or liquids "go down the wrong pipe".
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