Final answer:
A functional disorder of the colon is not defined by structural defects, infections, psychological, or solely genetic issues. It involves problems with how the colon functions and can have multiple contributing factors.
Step-by-step explanation:
A functional disorder of the colon implies that there is a problem with how the colon functions rather than a structural or anatomic defect. Among the choices provided:
- It is not a structural issue, as functional disorders are related to the operation of the colon, not its physical structure.
- It is not caused by infection, which would typically refer to an issue caused by pathogens like bacteria or viruses.
- It is not necessarily a psychological issue, though stress and psychological factors can influence the severity of symptoms.
- It is not solely a genetic disorder, though some functional gastrointestinal disorders may have a genetic component.
Therefore, based on the options given, none directly defines a functional disorder of the colon. These disorders are often complex and may have multiple contributing factors.