RESPIRATORY REVIEW QUESTIONS WITH 100% ANSWERS.
A negative respiratory pressure refers to a pressure that is less than atmospheric pressure (Patm).
Intrapleural pressure (Pip) is the negative pressure in the pleural cavity, which creates a partial vacuum
between the visceral and parietal pleurae. This partial vacuum (negative Pip), along with the surface
tension produced by the pleural fluid, holds the visceral and parietal pleurae together, thereby
connecting the lungs to the thorax wall. Equilibration between Patm and Pip, which would occur if air is
allowed to enter the intrapleural cavity, will result in lung collapse.
Which of the following pressures rises and falls with the phases of breathing but eventually equalizes
with the pressure of the air in the environment?
a. intrapleural pressure
b. atmospheric pressure
c. intrapulmonary pressure
d. transpulmonary pressurePhlebotomy MedCaC. intrapulmonary pressure
Intrapulmonary pressure rises when the thorax volume is reduced (during exhalation) and drops when
the thorax volume rises (during inhalation). When there is no change in thorax volume, intrapulmonary
pressure equalizes with the atmospheric pressure.
Which of the following processes is NOT properly matched with its description?
a. pulmonary ventilation: movement of gases into and out of the lungs
b. internal respiration: O2 diffuses out of the blood
c. external respiration: CO2 diffuses into the blood stream
d. transport of respiratory gases: O2 is bound to hemoglobinPhlebotomy MedCaC. external respiration:
CO2 diffuses into the blood stream
CO2 diffuses into the blood as it passes through the systemic capillaries of the tissues; this is internal
respiration.
Which of the following cavities surround(s) the lungs alone?
a. pericardial cavity
b. pleural cavities
c. thoracic cavity
, d. mediastinumPhlebotomy MedCaB. pleural cavities
The pleural cavities, which are located between the visceral and parietal pleural membranes, surround the
lungs alone.
Inspiration occurs when the is less than the .
a. thoracic cavity volume; lung volume
b. intrapulmonary pressure; atmospheric pressure
c. intrapleural pressure; transpulmonary pressure
d. tidal volume; vital capacityPhlebotomy MedCaB. intrapulmonary pressure; atmospheric pressure
Intrapulmonary pressure is the .
a. negative pressure in the intrapleural space
b. pressure within the pleural cavity
c. pressure within the alveoli of the lungs
d. difference between atmospheric pressure and respiratory pressurePhlebotomy MedCaC. pressure
within the alveoli of the lungs
Most inspired particles such as dust fail to reach the lungs because of the .
a. abundant blood supply to nasal mucosa
b. action of the epiglottis
c. ciliated mucous lining in the nose
d. porous structure of turbinate bonesPhlebotomy MedCaC. ciliated mucous lining in the nose
What is the amount of air that is normally ventilated in one breath?
A. vital capacity
B. tidal volume
C. expiratory reserve volume
D. inspiratory reserve volumePhlebotomy MedCaB. tidal volume
A tidal volume is the amount of air in a normal breath under resting conditions. One way to remember
this is to compare tidal breathing to ocean tides that go in and out, day and night, without ceasing.
A negative respiratory pressure refers to a pressure that is less than atmospheric pressure (Patm).
Intrapleural pressure (Pip) is the negative pressure in the pleural cavity, which creates a partial vacuum
between the visceral and parietal pleurae. This partial vacuum (negative Pip), along with the surface
tension produced by the pleural fluid, holds the visceral and parietal pleurae together, thereby
connecting the lungs to the thorax wall. Equilibration between Patm and Pip, which would occur if air is
allowed to enter the intrapleural cavity, will result in lung collapse.
Which of the following pressures rises and falls with the phases of breathing but eventually equalizes
with the pressure of the air in the environment?
a. intrapleural pressure
b. atmospheric pressure
c. intrapulmonary pressure
d. transpulmonary pressurePhlebotomy MedCaC. intrapulmonary pressure
Intrapulmonary pressure rises when the thorax volume is reduced (during exhalation) and drops when
the thorax volume rises (during inhalation). When there is no change in thorax volume, intrapulmonary
pressure equalizes with the atmospheric pressure.
Which of the following processes is NOT properly matched with its description?
a. pulmonary ventilation: movement of gases into and out of the lungs
b. internal respiration: O2 diffuses out of the blood
c. external respiration: CO2 diffuses into the blood stream
d. transport of respiratory gases: O2 is bound to hemoglobinPhlebotomy MedCaC. external respiration:
CO2 diffuses into the blood stream
CO2 diffuses into the blood as it passes through the systemic capillaries of the tissues; this is internal
respiration.
Which of the following cavities surround(s) the lungs alone?
a. pericardial cavity
b. pleural cavities
c. thoracic cavity
, d. mediastinumPhlebotomy MedCaB. pleural cavities
The pleural cavities, which are located between the visceral and parietal pleural membranes, surround the
lungs alone.
Inspiration occurs when the is less than the .
a. thoracic cavity volume; lung volume
b. intrapulmonary pressure; atmospheric pressure
c. intrapleural pressure; transpulmonary pressure
d. tidal volume; vital capacityPhlebotomy MedCaB. intrapulmonary pressure; atmospheric pressure
Intrapulmonary pressure is the .
a. negative pressure in the intrapleural space
b. pressure within the pleural cavity
c. pressure within the alveoli of the lungs
d. difference between atmospheric pressure and respiratory pressurePhlebotomy MedCaC. pressure
within the alveoli of the lungs
Most inspired particles such as dust fail to reach the lungs because of the .
a. abundant blood supply to nasal mucosa
b. action of the epiglottis
c. ciliated mucous lining in the nose
d. porous structure of turbinate bonesPhlebotomy MedCaC. ciliated mucous lining in the nose
What is the amount of air that is normally ventilated in one breath?
A. vital capacity
B. tidal volume
C. expiratory reserve volume
D. inspiratory reserve volumePhlebotomy MedCaB. tidal volume
A tidal volume is the amount of air in a normal breath under resting conditions. One way to remember
this is to compare tidal breathing to ocean tides that go in and out, day and night, without ceasing.
