What structure is lined with ceruminous glands?
A) pharyngotympanic (auditory) tube
B) auricle (pinna)
C) external acoustic meatus (auditory canal)
D) tympanic membrane
C
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Obstruction of the airways leads to
A) metabolic acidosis. B) metabolic alkalosis. C) respiratory alkalosis. D) respiratory acidosis.
Physiological dead air space is anatomic dead space plus
A. tidal volume. B. the residual volume. C. the volume of blood flowing to the lungs. D. the respiration rate. E. the volume of any alveoli where gas exchange is diminished.
An adult patient with an abnormal respiratory rate should:
A) be given oxygen at 4 L/min with a nasal cannula. B) be assessed immediately for heart rate abnormalities. C) be evaluated for other signs of inadequate ventilation. D) receive ventilatory assistance with a bag-mask device.
If the cusps of an atrioventricular valve are damaged or functionally impaired so that they do not close completely during the normal point in the cardiac cycle, blood may flow backwards. This is called ________.
A) ischemia B) regurgitation C) thrombosis D) automaticity E) nodal depolarization