heart

Introduction

heart, muscular organ that pumps blood to all parts of the body. The rhythmic beating of the heart is a ceaseless activity, lasting from before birth to the end of life.

Sections in this article:

The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.

See more Encyclopedia articles on: Anatomy and Physiology

Browse By Subject

Play Poptropica Worlds

Download Poptropica and play for free!

Explore a limitless universe of uncharted islands
App store
Google Play