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aerobic tending to stimulate the heart and lungs and thereby improve the body's ability to utilize oxygen. [1/3 definitions]
aerobics (used with a sing. or pl. verb) a system of physical conditioning involving sustained and vigorous exercise such as running, swimming, cycling, or dancing, that stimulates the heart and lungs and thereby improves the body's ability to utilize oxygen.
afferent bearing or leading toward a central organ or part, as nerves that conduct impulses to the spinal column or as veins that carry blood to the heart.
angina pectoris severe recurrent pain in the chest caused by a sudden decrease in the amount of blood flowing to the heart muscle.
aorta the main artery carrying blood from the left side of the heart to the arteries of all the rest of the body except the lungs.
artery a vessel that carries blood away from the heart. (Cf. vein.) [1/2 definitions]
atrioventricular of, involving, or located between the atria and ventricles of the heart.
atrium in anatomy, any internal cavity, esp. one of the two upper heart chambers. [1/2 definitions]
auricle an earlike projection of either of the two upper chambers of the heart, or one of the chambers itself; atrium. [1/3 definitions]
auricular of or relating to an auricle of the heart. [1/3 definitions]
auscultation listening to the heart, lungs, or the like for the purpose of medical diagnosis, usu. with a stethoscope or other instrument.
autonomic nervous system the part of the nervous system in vertebrates that controls involuntary bodily processes, such as the operation of the heart, stomach, and glands; sympathetic and parasympathetic nervous systems together.
basically in an important or central way; at heart.
bleeding heart any of several flowering plants, esp. a common garden variety with drooping red or deep pink, heart-shaped flowers. [1/2 definitions]
blood pressure the pressure of the blood against the inner wall of blood vessels, esp. the arteries or the heart, as exerted by the contractions of the heart muscles, often measured as an indicator of physical health.
blue baby an infant born with blue-tinged skin from insufficient oxygen in the blood, caused by a congenital heart or lung defect.
bosom the seat of thought, affection, or emotion; heart. [1/7 definitions]
bradycardia abnormally slow heart rate.
cardiac of or pertaining to the heart. [2/3 definitions]
cardiac arrest the failure of the heart to pump blood; heart attack.
cardio- heart.