What does being internal mean?

Being internal means being situated, existing, or occurring inside something, rather than outside, relating to inner part, inner nature, or inside of body, organization, or mind. As adjective, internal describes something within, inner, or private. For example, internal organs are organs inside body like heart and lungs, as opposed to external features like skin. Internal pain means pain inside body. In a company, internal means within organization, as internal meeting is meeting among employees, internal memo is memo inside company not for public, internal affairs department handles issues inside organization. For a person, being internal can mean being introspective, focused on inner thoughts and feelings, as internal person reflects inward. In psychology, internal locus of control means believing you control your life. In computers, internal storage is storage inside device. Internal can also mean private or confidential, as internal information not shared outside. In medicine, internal medicine is branch dealing with internal organs. So being internal generally means belonging inside, inner, inward, or private, opposite of external which is outside, outer, or public. It emphasizes what is inside rather than outside appearance.