Jun 3, 2026 · 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 double pump that is the …

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 …

Your heart is a vital organ that keeps blood pumping through your body. Learn more about your heart.

Aug 22, 2024 · 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.

Mar 24, 2022 · 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 valves, which …

Jan 8, 2025 · Learn about the heart's anatomy, how it functions, blood flow through the heart and lungs, its location, artery appearance, and how it beats.

May 6, 2026 · Here, learn about the structure of the heart, what each part does, and how it works to support the body. We also explore the electrical impulses and the role of CPR.

Dec 14, 2025 · The heart is an organ, about the size of a fist. The heart is made of muscle and pumps blood through the body. Blood is carried through the body in blood vessels called arteries and veins. …

2 days ago · Explore the anatomy and core functions of the heart with Innerbody's interactive 3D model.

Structure of the Heart The human heart is a four-chambered muscular organ, shaped and sized roughly like a man's closed fist with two-thirds of the mass to the left of midline. The heart is enclosed in a …