51) The amount of air that can be taken in : 1200355.
51) The amount of air that can be taken in over and above the tidal volume is the ________.
A) vital capacity
B) residual volume
C) expiratory reserve volume
D) inspiratory reserve volume
E) minimal volume
52) A peak flow meter records which of the following?
A) vital capacity
B) tidal volume
C) expiratory reserve
D) inspiratory reserve
E) maximum rate of forced expiration
53) A device called a pneumotachometer measures
A) the rate of air movement.
B) the maximum rate of forced expiration.
C) expiratory reserve volume.
D) inspiratory reserve volume.
E) vital capacity.
54) The volume of air moved into or out of the lungs during a single resting respiratory cycle is known as ________.
A) residual volume
B) vital capacity
C) tidal volume
D) inspiratory reserve volume
E) expiratory reserve volume
55) The volume of air that can be forcefully inhaled over and above tidal volume is called ________.
A) expiratory reserve volume
B) residual volume
C) minimal volume
D) inspiratory reserve volume
E) vital capacity
56) When the chest cavity has been penetrated, as in a pneumothorax, the amount of air in the respiratory system is reduced to the
A) tidal volume.
B) vital capacity.
C) minimal volume.
D) residual volume.
E) inspiratory reserve volume.
57) During exhalation,
A) pressure inside the lungs is less than the outside pressure.
B) pressure within the thoracic cavity decreases.
C) inside and outside pressures are equal.
D) the volume of the thoracic cavity increases.
E) the volume of the thoracic cavity decreases.
58) Which statement regarding respiration is true?
A) The sternocleidomastoid muscle works to elevate the rib cage.
B) Internal intercostal muscles elevate the rib cage.
C) The rectus abdominis muscle elevates the rib cage.
D) The external intercostal muscles lower the rib cage.
E) Elevation of the rib cage decreases the volume of the thoracic cavity.
59) Atmospheric pressure at sea level can be summarized as follows:
A) 760 mm Hg.
B) 14 mm Hg.
C) 569 mm Hg.
D) 380 mm Hg.
E) 100 mm Hg.
60) Which of the following is the most abundant gas in the air?
A) oxygen (O2)
B) nitrogen (N2)
C) water vapor (H2O)
D) carbon dioxide (CO2)
E) hydrogen (H2)
