Struggling with your prescribed literature?
Our Literature Study Guides provide insights and analysis of themes and characters and includes guidelines for writing your exam.
the windpipe or tube that carries air. It is kept open by C-shaped rings of cartilage.
epithelial tissue consisting of a single layer of cells.
disease caused when the arteries that supply the heart muscle become narrowed or blocked by the...
a molecule that is built up of two or more different elements that are chemically joined...
a blood vessel that returns oxygenated blood from the lungs to the left atrium of the heart.