Class 14 Flashcards
heart
noun
a hollow muscular organ that pumps the blood through the circulatory system by rhythmic contraction and dilation.
The man died from heart failure
brain
noun
an organ of soft nervous tissue contained in the skull of vertebrates, functioning as the coordinating center of sensation and intellectual and nervous activity.
“a brain tumor”
lungs
noun
plural noun: lungs
each of the pair of organs situated within the rib cage, consisting of elastic sacs with branching passages into which air is drawn, so that oxygen can pass into the blood and carbon dioxide be removed.
“the city had to be given lungs, in the shape of open spaces, squares, parks, and gardens”
intestines
noun
plural noun: intestines
(in vertebrates) the lower part of the alimentary canal from the end of the stomach to the anus.
“the contents of the intestine”