As a student, textbooks and lectures tend to be the main source of learning. Tests, skills check-off lists, and exams for licensure are typically based on them. And yes, learning the facts are an imperative aspect of patient treatment. It allows a clinician to find the source of a physical ailment, offer a skilled service to treat an ailment, and get paid.
However, since becoming a clinician I have learned that effective patient treatment runs much deeper than anatomy. It is multifaceted and includes treatment of the patient as a whole: physical, emotional, advocacy, and compassion.
The foundation of patient treatment is the physical component.