MN 551 Midterm Review Purdue University
What is the primary role of mucociliary blanket? - ANS-Trap foreign objects and bacteria
which doesn't allow entry to the lungs
What do the vocal cords contribute when it involves swallowing? - ANS-They contribute
to blocking of airways when swallowing, thus preventing food from entering the lungs.
What is aspiration pneumonia? - ANS-is a type of lung infection that is due to a
relatively large amount of material from the stomach or mouth entering the lungs
What does the Tracheobronchial Tree consists of - ANS-trachea, bronchi, and
bronchioles
Which type of penumonia are you at high risk if the swallowing mechanism is impaired?
- ANS-aspiration pneumonia
True or False... Volume of air that moves into and out of the air exchange portion of the
lungs is directly related to pressure difference between the lungs and atmosphere -
ANS-True
True or False... Airway Airflow is inversely related to the resistance that the air
encounters as it moves through the airways - ANS-True
What is the priniciple muscle for inspiration? What is the motion when contracted? -
ANS-diaphragm. the abdominal contents move downward and forward.
What is lung compliance? - ANS-It is the stretchability of our lungs. The more the lungs
can expand the more the compliance.
What determines lung compliance? - ANS-elastin and collagen fibers of lung, its water
content, and surface tension
What muscles are involved in expiration? - ANS-Expiration of the lungs is usually
passive. Relaxing the inspiratory muscles allows the elastic recoil of the lungs to reduce
the volume of the thoracic cavity passively
What is the primary role of mucociliary blanket? - ANS-Trap foreign objects and bacteria
which doesn't allow entry to the lungs
What do the vocal cords contribute when it involves swallowing? - ANS-They contribute
to blocking of airways when swallowing, thus preventing food from entering the lungs.
What is aspiration pneumonia? - ANS-is a type of lung infection that is due to a
relatively large amount of material from the stomach or mouth entering the lungs
What does the Tracheobronchial Tree consists of - ANS-trachea, bronchi, and
bronchioles
Which type of penumonia are you at high risk if the swallowing mechanism is impaired?
- ANS-aspiration pneumonia
True or False... Volume of air that moves into and out of the air exchange portion of the
lungs is directly related to pressure difference between the lungs and atmosphere -
ANS-True
True or False... Airway Airflow is inversely related to the resistance that the air
encounters as it moves through the airways - ANS-True
What is the priniciple muscle for inspiration? What is the motion when contracted? -
ANS-diaphragm. the abdominal contents move downward and forward.
What is lung compliance? - ANS-It is the stretchability of our lungs. The more the lungs
can expand the more the compliance.
What determines lung compliance? - ANS-elastin and collagen fibers of lung, its water
content, and surface tension
What muscles are involved in expiration? - ANS-Expiration of the lungs is usually
passive. Relaxing the inspiratory muscles allows the elastic recoil of the lungs to reduce
the volume of the thoracic cavity passively
