30 Questions
What is the function of the anatomic deadspace?
Does not participate in gas exchange
What is the typical volume of anatomic deadspace?
150 ml
What is the diameter of the terminal bronchioles?
0.5 mm
What is the primary function of the alveoli?
Gas exchange
How many generations of bronchioles do the terminal bronchioles constitute?
Sixteenth to nineteenth
What is the term for the respiratory bronchioles, alveolar ducts, and alveolar clusters?
All of the above
What is the primary function of the pharyngeal reflex?
To protect the airway
Which structure separates the oropharynx from the laryngopharynx?
Epiglottis
What is the name of the space between the vocal cords?
Glottis
Which of the following structures is NOT located in the nasopharynx?
Palatine tonsils
What is the name of the muscular structure that connects the tongue to the floor of the mouth?
Lingual frenulum
How many cartilages make up the larynx?
9
What percentage of the alveolar surface is covered by capillaries?
90%
What is the primary function of the alveolar-capillary membrane?
Gas exchange
What is the characteristic of the pulmonary circulation in terms of pressure and resistance?
Low pressure, low resistance
What percentage of carbon dioxide is supplied to the lungs via bronchial circulation?
1%-2%
What is the function of the bronchial veins?
Contribute to anatomic shunt
How much oxygen does the lung parenchyma get directly from inspired gas?
Most
What is the primary function of the lymphatic system in the context of the lungs?
To clear fluid from the interstitial and pleural spaces
Which type of nerve has the effect of constricting bronchial smooth muscles?
Parasympathetic nerve
What is the term for the surface tension that contributes to the elasticity of the lungs?
Alveolar surface tension
How many lobes does the right lung have?
Three
What is the term for the space between the lungs in the thoracic cage?
Mediastinum
What is the outermost layer of the thoracic wall composed of?
Skin, fat, and skeletal muscles
What is the primary function of Type II alveolar cells?
Producing surfactant
What is the primary role of alveolar macrophages?
Removing bacteria and foreign particles that deposit within acini
What is the main difference between Type I and Type II alveolar cells?
Type I cells cover 95% of the alveolar surface, while Type II cells cover 5%
What is the function of the interstitium?
To provide a gel-like substance that holds together the web-like network of collagen fibers
What is the main difference between tight and loose spaces in the lungs?
Tight spaces are between alveolar epithelium and endothelium of pulmonary capillaries, while loose spaces surround bronchioles and primary lobule
What is the primary function of the respiratory system?
To facilitate gas exchange
Test your knowledge of the oral cavity, tongue, and pharynx anatomy. Learn about the different parts of the oral cavity, including the hard and soft palate, and the functions of the pharynx. This quiz covers the structure and function of the oral and nasal cavities, including the adenoids and Eustachian tubes.
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