Which of the following is not true with respect to conducting airways? Secretory glands increase as airway divides.
The section of the airway that offers the least resistance to airflow is the: Terminal respiratory unit.
Surfactant is necessary for gas exchange in the alveoli because it is requir...
NURS 681 Final Exam Questions and
Correct Answers
Which of the following is not true with respect to conducting airways? ✅Secretory
glands increase as airway divides.
The section of the airway that offers the least resistance to airflow is the: ✅Terminal
respiratory unit.
Surfactant is necessary for gas exchange in the alveoli because it is required to:
✅Displace water.
Autonomic innervation is the primary determinant of smooth muscle activity in the
airway. Irritant receptors in the proximal airway are an example of: ✅Vagal afferents.
The NANC fibers serve primarily to: ✅Provide reciprocity to cholinergic excitation.
The __________________ are very sensitive to alveolar partial pressure of oxygen
(pO2). ✅Pulmonary arteries.
Elastic recoil is determined by: ✅Tissue elasticity and force needed to change alveolar
air-liquid interface.
Pulmonary emboli and pulmonary vascular disease are common causes of: ✅Alveolar
dead space.
Which of the following is most sensitive to high CO2 and drives respiration? ✅Central
chemoreceptors.
Hyperacute protective mechanisms that characterize an asthma attack include all of the
following:
Endothelial leakage.
Local edema.
Mucus hypersecretion.
Vasoconstriction. ✅Vasoconstriction.
The primary inflammatory mediators that characterize an asthma attack include:
The characteristics of chronic bronchitis include all of the following except:
A result of chronic airway injury and narrowing.
Involves inflammation of the small airways.
Characterized by limited mucus production.
Peribronchial fibrosis can occur. ✅Characterized by limited mucus production.
Which of the following is false in regards to the characteristics of emphysema?
Emphysema is a disease of the lung parenchyma and not the airways.
Airway inflammation is a primary factor of disease.
The condition leads to progressive destruction of terminal respiratory units.v
Emphysema results in hypoxia and dyspnea. ✅Airway inflammation is a primary factor
of disease.
The most sensitive spirometric parameter to detect early airflow limitation is:
FEV1.
FVC.
FEV1/FVC.
PEF. ✅FEV1/FVC.
Intrinsic restrictive lung diseases include all of the following except:
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