Heart | Structure, Function, Diagram, Anatomy, & Facts | Britannica
2024年10月31日 · Heart, organ that serves as a pump to circulate the blood. It may be as simple as a straight tube, as in spiders and annelid worms, or as complex as the four-chambered …
Heart - Wikipedia
The heart is a muscular organ found in most animals. This organ pumps blood through the blood vessels. [1] Heart and blood vessels together make the circulatory system. [2] The pumped …
Heart: Anatomy & Function - Cleveland Clinic
As the main organ of your circulatory system, your heart keeps you alive. It pumps blood throughout your body, bringing oxygen to your cells and tissues. Since your heart plays such a …
Heart Anatomy: Diagram, Blood Flow and Functions - MedicineNet
Learn about the heart's anatomy, how it functions, blood flow through the heart and lungs, its location, artery appearance, and how it beats.
Anatomy of the human heart - Wikipedia
The heart has the shape of a pyramid, with its apex pointing towards the left nipple while its base forms the posterior surface of the heart. Other surfaces are the anterior, inferior (or …
The heart: Anatomy, how it works, and more - Medical News Today
2020年9月30日 · The human heart is a finely-tuned instrument that serves the whole body. It is a muscular organ around the size of a closed fist, and it sits in the chest, slightly to the left of...
How the Heart Works - What the Heart Looks Like - NHLBI, NIH
2022年3月24日 · Your heart is in the center of your chest, near your lungs. It has four hollow chambers surrounded by muscle and other heart tissue. The chambers are separated by heart …
Heart Pictures, Diagram & Anatomy | Body Maps - Healthline
2015年3月10日 · The heart is a mostly hollow, muscular organ composed of cardiac muscles and connective tissue that acts as a pump to distribute blood throughout the body’s tissues.
Human heart: Anatomy, function & facts - Live Science
2022年7月27日 · The human heart is an organ that pumps blood throughout the body via the vessels of the circulatory system, supplying oxygen and nutrients to the tissues and removing …
Heart Anatomy: Labeled Diagram and Quick Reference - Verywell …
2024年6月11日 · Understanding its basic anatomy is crucial to understanding how it functions. This article provides a comprehensive look at the heart's structure with a detailed, labeled …