At one time it was thought to be impossible to operate within the body cavities. Then the Canadian doctor, William Beaumont, operated on a patient with a gunshot wound to the stomach. A few decades later came breakthroughs in heart operations and transplants. The 1990s was called the decade of the brain because of the extensive research being done on how the brain functions. Name the body cavities associated with these breakthroughs in order.
A. abdominal-dorsal-thoracic.
B. abdominal-thoracic-dorsal.
C. thoracic-dorsal-abdominal.
D. thoracic-abdominal-dorsal.
E. dorsal-thoracic-abdominal.
Answer: B
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