title: Implantable transducers and systems: closed-loop physiological control. Introduction.
mesh_terms: D000818:Animals; D001698:Biomedical Engineering; D002320:Cardiovascular Physiological Phenomena; D005246:Feedback; D006706:Homeostasis; D006801:Humans; D007668:Kidney / Q000502:physiology; D008960:Models, Psychological; D008991:Monitoring, Physiologic / Q000295:instrumentation; D009424:Nervous System Physiological Phenomena; D019736:Prostheses and Implants; D014159:Transducers