An injury to the spinal cord is not possible below the:
A) second lumbar vertebra. B) ninth thoracic vertebra.
C) fourth cervical vertebra. D) second thoracic vertebra.
Answer: A
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As an astronaut is lifted into Earth's orbit, what is the first change to take place in response to the drop in cabin pressure?
A) increased hematocrit B) renal hypoxia C) increased alveolar ventilation rate D) decreased alveolar PO2 E) decreased hemoglobin saturation
Muscular ridges on the inner surface of the ventricles are called
A) coronary sinuses. B) trabeculae carneae. C) intercalated discs. D) papillary muscles. E) chordae tendineae.
Nicholas has been diagnosed with a condition resulting from inflammation of tissue associated with his lungs. Which statement best clarifies the condition?
A. Nicholas has inflammation of the pleura, the serous membranes associated with the lungs. B. Nicholas has inflammation of the cutaneous membrane associated with the lungs. C. Nicholas has inflammation of the mucous membranes associated with the lungs. D. Nicholas has inflammation of the peritoneum, the synovial membrane associated with the lungs.
Which of the following structures is contained within the vertebral canal?
A. Brain B. Lungs C. Heart D. Spinal cord