In medicine, the movement of fluid through the body in a regular or circuitous course. The circulatory system, composed of the heart and blood vessels, functions to produce circulation. Heart failure is an example of a problem with circulation
eMedicineHealth (Experts for Everyday Emergencies - eMedicineHealth does not provide medical advice, diagnosis or treatment), Cold Hands and Feet Glossary of Terms, 2015. (MedTerms Medical Dictionary) http://www.emedicinehealth.com/cold_hands_and_feet /glossary_em.htm and http://www.medicinenet.com/script/main/alphaidx.as p?p=a_dict, (Med Emr Prep - Amer) {871}