Podcast
Questions and Answers
What is the shape of the lungs?
What is the shape of the lungs?
- Round
- Conical (correct)
- Square
- Pyramidal
Where does the trachea bifurcate?
Where does the trachea bifurcate?
- At the arch of the aorta (correct)
- At the apex of the lung
- In the alveolar sac
- At the base of the lung
Where does the trachea divide into?
Where does the trachea divide into?
- The right and left main stem bronchi (correct)
- The right and left secondary bronchi
- The right and left tertiary bronchi
- The right and left quaternary bronchi
What is the difference between the right and left main stem bronchi?
What is the difference between the right and left main stem bronchi?
What is the longest of the two primary bronchi?
What is the longest of the two primary bronchi?
How many alveolar ducts are there in the respiratory bronchioles?
How many alveolar ducts are there in the respiratory bronchioles?
How many terminal bronchioles are there in the respiratory bronchioles?
How many terminal bronchioles are there in the respiratory bronchioles?
What is the structure that attaches each lung to its pleura?
What is the structure that attaches each lung to its pleura?
Which main stem bronchus is shorter and straighter?
Which main stem bronchus is shorter and straighter?
How many alveolar ducts divide from each bronchiole?
How many alveolar ducts divide from each bronchiole?
What shape are the lungs?
What shape are the lungs?
What is the shape of the lungs?
What is the shape of the lungs?
What is the attachment of the lungs to its pleura?
What is the attachment of the lungs to its pleura?
What is the most likely place for a foreign body to lodge?
What is the most likely place for a foreign body to lodge?
What is the pulmonary ligament responsible for?
What is the pulmonary ligament responsible for?
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Study Notes
- The trachea divides into right and left primary bronchi. - The right main stem bronchus is the shorter, straighter, and larger of the two. - The left main stem bronchus is the longer, curved, and smaller of the two. - The trachea bifurcates behind the arch of the aorta, and the right and left primary bronchi divide dichotomously. - There are millions of terminal bronchioles in the respiratory bronchioles, and each bronchioles divides into 2-11 alveolar ducts. - The primary bronchi enter the alveolar sac and the right main stem bronchus goes directly to the lungs, while the left main stem bronchus divides into two smaller branches, one of which goes to the lungs. - Foreign bodies are more apt to lodge in the right main stem bronchus because it is shorter and straighter.
- The lungs are conical in shape and have an apex and a base.
- Each lung is attached to its pleura only by its root and the pulmonary ligament.
- The lungs lie free within their pleural cavities.
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