Lung Volumes and Capacity

The volume of air that moves into and out of the lungs during normal, relaxed breathing is called:

• Residual volume

• Tidal volume

• Inspiratory reserve volume

• Vital capacity

Which lung volume represents the additional air that can be forcibly exhaled after a normal expiration?

• Tidal volume

• Inspiratory reserve volume

• Expiratory reserve volume

• Residual volume

The sum of tidal volume, inspiratory reserve volume, and expiratory reserve volume is known as:

• Total lung capacity

• Functional residual capacity

• Inspiratory capacity

• Vital capacity

Which of the following lung volumes or capacities includes the residual volume?

• Vital capacity

• Inspiratory capacity

• Functional residual capacity

• Tidal volume

The amount of air remaining in the lungs after a maximal expiration is called:

• Expiratory reserve volume

• Residual volume

• Functional residual capacity

• Tidal volume

Which of the following represents the total amount of exchangeable air in the lungs?

• Vital capacity

• Inspiratory capacity

• Functional residual capacity

• Total lung capacity

Which of the following is true about the functional residual capacity?

• It is the sum of inspiratory reserve volume and tidal volume

• It represents the volume of air remaining in the lungs after a normal expiration

• It is measured directly by spirometry
  

• It decreases during exercise

Which of the following statements about pulmonary ventilation is correct?

• Inhalation is always an active process, while exhalation is always passive

• The pressure in the alveoli is always lower than atmospheric pressure

• Boyle's law explains the relationship between lung volume and air pressure

• The pleural pressure is positive during normal breathing

Which of the following best describes the process of inhalation?

• Active relaxation of the diaphragm

• Passive movement of air out of the lungs

• Active contraction of the diaphragm and external intercostal muscles

• Decrease in thoracic cavity volume

What is A and B

• Tidal Volume

• Inspiratory reserve volume

• Vital Capacity

• Expiratory Reserve volume