heart diagram of blood flow

August 03, 2026

General

A labeled heart diagram helps you understand the structure of human heart, which pumps blood through body. Learn the structure and several heart conditions. heart, organ that serves as a pump to circulate the blood. It may be a straight tube, as in spiders and annelid worms, or a somewhat more elaborate structure with one or more receiving chambers (atria) and a main pumping chamber (ventricle), as in mollusks. In fishes the heart is a folded tube, with three or four enlarged areas that correspond to the chambers in the mammalian heart. In animals ... The heart is a muscular organ found in humans and other animals. This organ pumps blood through the blood vessels. [1] The heart and blood vessels together make up the circulatory system. [2] The pumped blood carries oxygen and nutrients to the tissue, while carrying metabolic waste such as carbon dioxide to the lungs. [3] In humans, the heart is approximately the size of a closed fist and is ... Your heart is a vital organ that keeps blood pumping through your body. Learn more about your heart. Learn about the anatomy of the heart and how its chambers, valves, and vessels work together to maintain effective blood circulation throughout the body to sustain life. For related background details, please refer to our report on how to wire a garage diagram. The heart is a muscular organ that pumps blood throughout the body via the circulatory system. It is approximately the size of a fist and consists of four chambers: two atria and two ventricles. The heart is composed of specialized muscle tissue, known as myocardium, and is encased within a double-layered protective sac called the pericardium. [5] The heart works in a rhythmic cycle of ...