Blood vessels that carry blood away from the heart. Capillaries Tiny, thin-walled blood vessels that allow the exchange of gases and nutrients between the blood and cells and are located between arteries and veins.
Two students working on an essay together. The definition of an essay is a short piece of writing that expresses information as well as the writerâs opinion. An example of an essay is a short paper about why smoking is bad for you. To essay is defined as to try something.
A literary essay is a short, non-fiction composition that covers virtually any literary topic imaginable. Authors sometimes write literary essays for reading pleasure rather than to convey a message, and students are often assigned literary essays to assess their knowledge of books or stories they read.