Exam 11: Ventilation

Which of the following will cause an increase in the pressure energy required for inspiration? 1) Increased compliance 2) Increased flow 3) Increased resistance 4) Increased volume

A patient has a V_T of 625 ml and a physiological dead space of 275 ml and is breathing at a frequency of 16/min. What is the alveolar ventilation (V_A)?

Normal lung compliance is approximately which of the following?

What term is used to note the difference between inspiratory lung volume and expiratory lung volume at any given pressure?

Normal R_aw is approximately which of the following?

Hypoventilation is defined as:

Which is the correct formula to calculate the alveolar minute ventilation of a spontaneously breathing subject?

In healthy individuals, what may lead to airway collapse?

What forces must be overcome to move air into the respiratory system? 1) Tissue movement 2) Elastic forces of lung tissue 3) Airway resistance 4) Surface tension forces

During expiration, why does gas flow out from the lungs to the atmosphere?

Under resting metabolic conditions, how much carbon dioxide does a normal adult produce per minute?

What is the primary function of the lungs?

In a normal individual, what is the oxygen cost of breathing as a percentage of the body's total oxygen consumption?

Which of the following statements about the equal pressure point (EPP) is true?

What is ventilation that is insufficient to meet metabolic needs called?

In traditional physical terms, how is work defined?

Which of the following factors would tend to increase the elastic component of the work of breathing? 1) Decreased compliance of the lungs or thorax 2) High frequencies of breathing 3) Increased V_T

For healthy individuals at rest, which of the following statements about exhalation is true?

What is the normal increase in ventilation that occurs with increased metabolic rates called?

What is the gas that is wasted during normal ventilation called?