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(Encyclopedia) congenital heart disease, any defect in the heart present at birth. There is evidence that some congenital heart defects are inherited, but the cause of most cases is unknown. One…
(Encyclopedia) congestive heart failure, inability of the heart to expel sufficient blood to keep pace with the metabolic demands of the body. In the healthy individual the heart can tolerate large…
(Encyclopedia)
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Cross section of heart, with arrows indicating direction of blood flow
heart, muscular organ that pumps blood to all parts of the body. The rhythmic beating of the heart is a…
(Encyclopedia) heart-lung machine, device that maintains the circulation of the blood and the oxygen content of the body when connected with the arteriovenous system; it is also called the pump…
The Heart of the Matter: Writing a Thesis StatementWriting WellPaper ChaseTime Flies When You're Having FunSubject to ChangeSubjects vs. TopicsThe Heart of the Matter: Writing a Thesis Statement…
(Encyclopedia) Heart, river, 180 mi (290 km) long, rising in the low prairie country near the Little Missouri River, SW N.Dak., and flowing E to the Missouri at Mandan, N.Dak. The Heart Butte and…
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