Head and neck surgery
Head: The upper part of the human body, or the front or upper part of the body of an animal, typically separated from the rest of the body by a neck, and containing the brain, mouth, and sense organs.
https://meshb.nlm.nih.gov/record/ui?ui=D006257
Also, skull, facial bones, injuries: craniocerebral trauma
Neck: The part of a human or animal body connecting the head to the rest of the body.
https://meshb.nlm.nih.gov/record/ui?ui=D009333
Also, cervical vertebrae, neck muscles
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