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To identify and define common prefixes used in medical terms. PREFIX MEANING EXAMPLES a-,an- No, not, without Apnea, aphasia, atrophy, anemia, amenorrhea ab- Away from abnormal ana- Up, apart analysis ante- Before, forward antepartum anti- against Antibody, antigen, antibiotic brady- slow bradycardia dys- Bad, painful, difficult, abnormal Dyspnea, dysphagia, dysplasia, dysmenorrhea, dysuria ec out Ectopic pregnancy TEST NORMAL ABNORMAL color Light yellow Red (hematuria) clarity clear Cloudy (infection) Ph (chemical nature) Slightly acidic Alkaline (infection) protein Very slight Proteinuria (renal disease) sugar none Glycosuria (diabetes mellitus) Aplastic anemia Hemolytic anemia Iron deficiency anemia Pernicious anemia Sickle cell anemia PREFIX MEANING EXAMPLE Epi- Above, upon Epidural hematoma, epidermis Ex- out excision Extra- outside extrahepatic Hemi- half hemigastrectomy Hyper- Excessive, too much, above Hyperthyroidism, hypertrophy, hypertension, hyperglycemia Meta- Change, beyond Metastasis, metacarpal Endo- Within, inner Endoscopy, endocrine glands. Arthroscopy Bronchoscopy Colonoscopy Cystoscopy Gastroscopy Proctosigmoidoscopy Mediastinoscopy Sigmoidoscopy hysteroscopy GLAND HORMONES Adrenal glands Adrenaline (epinephrine) Ovaries Estrogen, progesterone Pancreas Insulin Parathyroid glands Parathyroid hormone (PTH) Testes Testosterone Thyroid gland Thyroxine Pituitary gland Adrenocorticotrophic hormone (ACTH) ,follicle-stimulating hormone (FSH) ,growth hormone (GH), thyroid-stimulating hormone (TSH) PREFIX MEANING EXAMPLE Para- Besides, near, along Parathyroid glands, paralysis Post- After, behind Postpartum, postmortem Peri- surrounding perianal Poly- Many, much Polyuria, polydipsia Quadri- four quadriplegia Re- back Relapse, remission Pros- Before, forward Prosthesis Syn- With, together syndrome Acquired immunodeficiency syndrome (AIDS) Carpal tunnel syndrome Down syndrome Mitral valve prolapse Toxic shock syndrome MICU- medical intensive care unit PICU- pediatric intensive care unit SICU- surgical intensive care unit