Final answer:
The patient's health history and laboratory results should be added to the Database section of the POMR, as it serves as the repository for all data collected about the patient.
Step-by-step explanation:
A medical assistant should enter the patient's health history and laboratory results into the Database section of the patient's computerized problem-oriented medical record (POMR). The Database section is the repository for all the data collected about the patient, which includes the health history, laboratory results, diagnostic test results, and other important information. The POMR is structured to facilitate the identification and treatment of the patient's problems, and it typically comprises four sections: Database, Problem List, Treatment Plan, and Progress Notes. The Database section serves as the repository of objective data, including relevant patient information such as medical history and test results. This section provides a comprehensive overview of the patient's health status and serves as a reference for healthcare professionals.