Quiet inspiration is the function of
the diaphragm and the internal intercostal muscles
the diaphragm and the external intercostal muscles
the internal intercostal and external intercostal muscles
none of the above
During normal, quiet respiration, the amount of air exchanged between the lungs and atmosphere is called ________________ and has a volume of __________________ mL.
tidal volume; 1200
vital capacity; 4500
tidal volume; 500
residual volume; 1200
Functional residual capacity equals
TV + IRV
TV + IRV + ERV + RV
TV + IRV + ERV
ERV + RV
Eupnea is a term used to describe
rapid, deep respiration
cessation of respiration
slow, shallow respiration
normal breathing
Under normal conditions, air in the atmosphere exerts a pressure of
500 mm Hg.
560 mm Hg.
660 mm Hg.
760 mm Hg.
Areas where gas exchange cannot take place are
anatomical dead space
nose, pharynx, larynx
trachea and the bronchi
all of the above
All of the following are regulated processes associated with the functioning of the respiratory system except
control of cell reproduction
gas exchange in lungs and tissue
pulmonary ventilation
transport of gases
Dalton's law is also known as
Henry's law
Boyle's law
Charles' law
the law of partial pressures
Temperature is the measurement of the motion of molecules
The largest amount of air that can enter and leave the lungs during respiration is termed total lung capacity (TLC)
Residual volume (RV) is the volume remaining in the respiratory tract after maximum expiration
The temporary cessation of breathing is termed apnea
It is not possible to exhale all of the air from your lungs
The ability of the lungs and thorax to stretch, referred to as , is essential to normal respiration.
Intrapleural pressure is always less, or negative with respect to alveolar pressure. The difference is called the .
Tidal volume multiplied by the respiratory rate yields the .
The constant alternation between inspiration and expiration is called the .
The basic rhythm of the respiratory cycle of inspiration and expiration seems to be generated by the .
The term that means the same thing as breathing is
gas exchange
respiration
inspiration
Which of the following does not occur during inspiration?
elevation of the ribs
the diaphragm relaxes
alveolar pressure decreases
chest cavity becomes longer from top to bottom
A young adult male would have a vital capacity of about
500 mL
1200 mL
3300 mL
4800 mL
The amount of air that can be forcibly exhaled after expiring the tidal volume is knows as the
total lung capacity
vital capacity
inspiratory reserve volume
expiratory reserve volume
Which one of the following is correct?
VC = TV - IRV + ERV
VC = TV + IRV - ERV
VC = TV + IRV x ERV
VC = TV + IRV + ERV
Air in the pleural space of the thoracic cavity is called a pneumothorax
A deficiency of surfactant in premature infants is called SIDS
❌: normal exhalation volume ❌: approximately 3300 mL ❌: collapsed lung ❌: increased in emphysema ❌: Po2 ❌: reduces surface tension in lungs ❌: cessation of breathing ❌: sensitive to changes in arterial CO2 and pH ❌; helps control respirations ❌: respiratory stimulant
