The left primary bronchus divides into ____ branches and the right primary bronchus divides into ____ branches
2,3
2,2
3,2
3,3
2,3
Rationale: The left primary bronchus divides into two secondary bronchi to feed the two lobes of the lung. The right primary bronchus divides into three secondary bronchi to feed the three lobes of the lung.
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A) electron B) proton C) neutron D) None of the above
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a. ICD-9-CM b. RBRVS c. CPT d. EOB
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