Organs
Dermato [ex: dermatologist, dermatitis]
Skin
Arthro [ex: arthritis, arthroscopy]
Joint
Neuro [ex: neuropathy, neuritis]
Nerve
Opti, Ocu, Opthalmo [ex: optician, ocular, ophthalmology]
Eye
Cardio [ex: cardiologist, cardiovascular]
Heart
Hepato [ex: hepatitis, hepatotoxic, hepatocyte]
Liver
Osteo [ex: osteoarthritis, osteopenia]
Bone
Cerebro [ex: cerebrospinal fluid, cerebrum]
Brain
Oto, Auri, Aud [ex: otitis, auricle, auditory]
Ear
Heme or Hemato [ex: hematuria, hematemesis, hemangioma]
Blood
Gastro [ex: gastritis, gastrointestinal]
Stomach
My [ex: myoma, myalgia]
Muscle
Psycho [ex: psychology, psychopath, psychosomatic]
Mind
Phono [ex: dysphonia, aphonia]
Sound
Angi(o), Vas(o) [ex: angioplasty, vasoconstriction/vasodilation, vascular]
Blood vessel
Nephro or Renal [ex: nephritis, nephrectomy, renal failure]
Kidney
Carpo [ex: carpal tunnel syndrome, carpal bones]
Wrist
Encephalo [ex: encephalitis, encephalopathy]
Brain
Rhino [ex: rhinoplasty, rhinitis]
Nose
Thrombo [thrombosis, thrombolytic]
Clot
Pneumo or Pulm [ex: pneumonia, pulmonary embolism]
Lung
Cervic(o) [ex: Cervical spine, cervicitis]
Neck
Schizo [ex: schizophrenia]
Split
Lingu or Glosso [ex: lingual, linguistic, glossophobia]
Tongue
Phlebo, Veno [ex: phlebitis, venous]
Vein