How the Heart Works - What the Heart Looks Like | NHLBI, NIH
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 …
How the Heart Works - NHLBI, NIH
Mar 24, 2022 · The heart is an organ about the size of your fist that pumps blood through your body. It is made up of multiple layers of tissue. Your heart is at the center of your circulatory system. This …
Heart Inflammation - Pericarditis | NHLBI, NIH
Oct 10, 2023 · Pericarditis is inflammation of the pericardium — the sac surrounding the heart. This sac is made of two thin layers of tissue with a small amount of fluid between them. The fluid keeps the …
Atrial Fibrillation - Causes and Risk Factors | NHLBI, NIH
Nov 30, 2022 · Atrial fibrillation is most often caused by changes to the heart’s tissue or the electrical signaling that helps the heartbeat. To better understand atrial fibrillation, it helps to first understand …
Heart Tests - NHLBI, NIH
Mar 24, 2022 · Heart imaging tests take pictures of your heart or its arteries or blood vessels to help your doctor see whether there are any problems. Cardiac CT scan A cardiac computed tomography …
Heart Inflammation - What Is Heart Inflammation? | NHLBI, NIH
Oct 10, 2023 · Heart Inflammation is your body’s natural reaction to an infection or injury to the heart. To protect your body, your white blood cells send chemicals that increase blood flow to the area. This …
What is a cardiac muscle? - BYJU'S
The cardiac muscle is one of three types of muscles in the human body and is found in the walls of the heart. Cardiac muscle is made up of specialised cells called cardiomyocytes. These cells are …
Diagram of Cardiac Muscle - BYJU'S
Myocardium or cardiac muscle is a type of vertebrate muscle tissue apart from smooth and skeletal muscle tissues. Myocardium forms the thick middle layer of the heart while the inner layer is called …
Heart Inflammation - Causes and Risk Factors | NHLBI, NIH
Oct 10, 2023 · Viral, bacterial, and fungal infections are the main causes of heart inflammation, but other conditions or lifestyle habits can also raise your risk. Learn the causes and risk factors and what you …
Heart Attack - Causes and Risk Factors | NHLBI, NIH
Mar 24, 2022 · What causes a heart attack? The most common cause of a heart attack is coronary artery disease, which is the most common type of heart disease. This is when your coronary artery …