Heart | Structure, Function, Diagram, Anatomy, & Facts | Britannica
2024年10月31日 · In humans, the heart is situated between the two lungs and slightly to the left of center, behind the breastbone. It rests on the diaphragm, the muscular partition between the …
Heart: Anatomy & Function - Cleveland Clinic
Your heart walls are the muscles that contract (squeeze) and relax to send blood throughout your body. A layer of muscular tissue called the septum divides your heart walls into the left and …
How the Heart Works - What the Heart Looks Like - NHLBI, NIH
2022年3月24日 · The heart is made of three layers of tissue. Endocardium is the thin inner lining of the heart chambers and also forms the surface of the valves. Myocardium is the thick …
Heart - Wikipedia
In humans, deoxygenated blood enters the heart through the right atrium from the superior and inferior venae cavae and passes to the right ventricle. From here, it is pumped into pulmonary …
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 …
Heart anatomy: Structure, valves, coronary vessels | Kenhub
2023年11月3日 · Overview of the anatomy and functions of the heart. The heart is a muscular organ that pumps blood around the body by circulating it through the circulatory/vascular …
The Heart: Anatomy and 3D Illustrations - Innerbody
2024年11月27日 · Explore the anatomy and core functions of the heart with Innerbody's interactive 3D model. The heart is a muscular organ about the size of a closed fist that …
Histology, Heart - StatPearls - NCBI Bookshelf
2023年1月2日 · At the histological level, the cellular features of the heart play a vital role in its normal function and adaptations. The cells that constitute the heart are unique. It can initiate …
Heart Anatomy: size, location, coverings and layers
2013年8月26日 · Blood vessels that carry blood to and from body tissues form the systemic circuit. The heart has two receiving chambers, and two pumping chambers. The right atrium …
Cardiac muscle tissue: Definition, function, and structure
2019年6月21日 · Cardiac muscle tissue is a specialized, organized type of tissue that only exists in the heart. It is responsible for keeping the heart pumping and blood circulating around the …