Which portion of the lung contains the entrance and exit for pulmonary veins, but also the right and left primary bronchi?
hilum
mediastinum
base
apex
hilum
Rationale: Many organs have a hilar region. The hilum serves as the entrance and exit point on the organ for vessels and other structures.
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What will be an ideal response?
Intractable, chronic, posttraumatic headache is reported with code _____
Fill in the blank(s) with correct word