MN 551 MIDTERM REVIEW PATHO WITH QUESTIONS AND
ANSWERS #6
What is the primary role of mucociliary blanket? - correct answer Trap foreign objects
and bacteria which doesn't allow entry to the lungs
What do the vocal cords contribute when it involves swallowing? - correct answer They
contribute to blocking of airways when swallowing, thus preventing food from entering
the lungs.
What is aspiration pneumonia? - correct answer 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 - correct answer trachea, bronchi, and
bronchioles
Which type of penumonia are you at high risk if the swallowing mechanism is impaired?
- correct answer 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 -
correct answer True
True or False... Airway Airflow is inversely related to the resistance that the air
encounters as it moves through the airways - correct answer True
What is the priniciple muscle for inspiration? What is the motion when contracted? -
correct answer diaphragm. The abdominal contents move downward and forward.
What is lung compliance? - correct answer It is the stretchability of our lungs. The more
the lungs can expand the more the compliance.
What determines lung compliance? - correct answer elastin and collagen fibers of lung,
its water content, and surface tension
What muscles are involved in expiration? - correct answer 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 are the 4 forces overcome by the respiratory muscles? - correct answer 1. Elastic
recoil of the lungs, measured as compliance
2. Elastic recoil of the chest wall
3. Surface tension
4. Airway resistance
ANSWERS #6
What is the primary role of mucociliary blanket? - correct answer Trap foreign objects
and bacteria which doesn't allow entry to the lungs
What do the vocal cords contribute when it involves swallowing? - correct answer They
contribute to blocking of airways when swallowing, thus preventing food from entering
the lungs.
What is aspiration pneumonia? - correct answer 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 - correct answer trachea, bronchi, and
bronchioles
Which type of penumonia are you at high risk if the swallowing mechanism is impaired?
- correct answer 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 -
correct answer True
True or False... Airway Airflow is inversely related to the resistance that the air
encounters as it moves through the airways - correct answer True
What is the priniciple muscle for inspiration? What is the motion when contracted? -
correct answer diaphragm. The abdominal contents move downward and forward.
What is lung compliance? - correct answer It is the stretchability of our lungs. The more
the lungs can expand the more the compliance.
What determines lung compliance? - correct answer elastin and collagen fibers of lung,
its water content, and surface tension
What muscles are involved in expiration? - correct answer 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 are the 4 forces overcome by the respiratory muscles? - correct answer 1. Elastic
recoil of the lungs, measured as compliance
2. Elastic recoil of the chest wall
3. Surface tension
4. Airway resistance
