Heart | Structure, Function, Diagram, Anatomy, & Facts | Britannica
Dec 9, 2024 · In humans and other mammals and in birds, the heart is a four-chambered double pump that is the centre of the circulatory system. In humans it is situated between the two lungs and slightly to the left of centre, behind the breastbone; it rests on the diaphragm, the muscular partition between the chest and the abdominal cavity.
Heart Anatomy: Complete Guide with Parts, Names & Diagram
Dec 26, 2024 · The heart’s conduction system is an internal electrical network that ensures a steady heartbeat by coordinating the contraction and relaxation of heart muscles. It generates and transmits electrical impulses along precise pathways and synchronizes the movements of the heart’s chambers.
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 vital role, it’s important to take care of it.
Anatomy of the human heart - Wikipedia
The major system consists of the coronary sinus, a wide vessel that collects blood from smaller veins and drains it to the right atrium. The smaller system consists of smaller veins that are draining the inner part of cardiac mass directly to cardiac cavities, most commonly to …
Anatomy and Function of the Heart's Electrical System
In the simplest terms, the heart is a pump made up of muscle tissue. Like all muscle, the heart needs a source of energy and oxygen to function. The heart's pumping action is regulated by an electrical conduction system that coordinates the contraction of the various chambers of the heart.
Heart - Structure, Function, Anatomy, Location, Diagram
Nov 29, 2024 · 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
Heart - Wikipedia
The heart is a muscular organ found in humans and other animals. This organ pumps blood through the blood vessels. [1] Heart and blood vessels together make 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]
Anatomy and Function of the Heart's Electrical System
Like all muscles, the heart needs a source of energy and oxygen to work. The heart's pumping action is controlled by an electrical system. This system organizes how the chambers of the heart contract and pump blood. How does the heart beat?
The heart: Anatomy, how it works, and more - Medical News Today
Sep 30, 2020 · In this article, we explore the structure of the heart, how it pumps blood around the body, and the electrical system that controls it. The heart consists of four chambers: The atria: These...
16.3: Conduction of Electrical Impulses - Medicine LibreTexts
4 days ago · The National Heart, Lung, and Blood Institute provides a video with information about the heartbeat and a video with an image of the conduction system, including the pacemaker of the heart.. The origination of the impulse from the sinoatrial node in the atrium and the pathway of conduction is what leads to a normal heart rate (60–100 beats per minute) and rhythm, which is called normal sinus ...