In this partial spinal cord transection, most commonly caused by a hyperextension injury, the
patient demonstrates more pronounced weakness in the hands than in the legs. This condition
is called:
A. Central Cord Syndrome
B. Brown-Sequard Syndrome
C. Posterior Cord Syndrome
D. Anterior Cord Syndrome A. Central Cord Syndrome
Although classified as a benzodiazepine, this medication can be used to treat spasticity:
A. meperidine (Demerol)
B. baclofen (Lioresal)
C. dantrolene (Dantrium)
D. diazepam (Valium) D. diazepam (Valium)
Which of the following statements best describes the neurochemical control of breathing in a
healthy individual?
A. Breathing is stimulated by elevated PO2 and low pH
B. Breathing is stimulated by elevated PCO2 and high pH
C. Breathing is stimulated by elevated PCO2 and low pH
D. Breathing is stimulated by a low PCO2 and high pH C. Breathing is stimulated by elevated
PCO2 and low pH
If surfactant production is not sufficient, alveolar surface tension increases causing:
, A. decreased work of breathing
B. alveolar expansion
C. normal gas-exchange
D. decreased lung expansion D. decreased lung expansion
Which of the following statements best explains "decreased compliance?"
A. The lungs are easy to inflate
B. Diffusion of O2 and CO2 cannot take place
C. The lungs are "stiff."
D. The lung has increased elastic recoil C. The lungs are "stiff."
Alveolar Ventilation is BEST measured by:
A. Observation of rate, depth and pattern of respirations
B. Arterial Blood Gas Analysis
C. Chest X-Ray
D. Incentive Spirometry B. Arterial Blood Gas Analysis
How does surfactant facilitate alveolar distension and ventilation?
A. By increasing surface tension in the alveoli
B. By deceasing surface tension in the alveoli
C. By decreasing thoracic compliance
D. By attracting water to the alveolar surface B. By deceasing surface tension in the alveoli
Oxygen diffuses from the alveoli to the blood because: