A hollow muscular organ that pumps the blood through the circulatory system by rhythmic contraction and dilation. In vertebrates there may be up to four chambers (as in humans), with two atria and two ventricles.
Part of Speech
noun
Semantic Domain
Humans, Social Relations and Organization
Animals
Birds
Fish and marine creatures
Reptiles and amphibians
Body parts
Example Sentence
Heart disease is a term used to refer to diseases of the heart and blood vessel system