NettetThe heart wall is composed of three layers (from outside to inside): epicardium - the same tissue as the visceral pericardium myocardium - makes up most of heart wall, composed of cardiac muscle tissue (which is made of uninucleated cardiac muscle cells endocardium - a thin layer of endothelial tissue that lines the heart chambers NettetThe heart is a muscular organ about the size of a fist, located just behind and slightly left of the breastbone. The heart pumps blood through the network of arteries and veins called the ...

Surface projections of the heart: Borders and landmarks Kenhub

NettetThe upper chamber is called an atrium (or auricle), and the lower chamber is called a ventricle. The two atria act as receiving chambers for blood entering the heart; the … NettetThe heart consists mostly of cardiac muscle cells (or myocardium). Cardiac muscle Definition, Function, & Structure Britannica Cardiac muscle is similar to skeletal muscle, another major muscle type, in that … body armor strawberry banana 28oz

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Nettet7. mar. 2024 · The heart is a muscular, four-chambered system that is responsible for pumping blood through the vascular network. The organ is located within the thoracic cavity in a region known as the mediastinum. It is bordered bilaterally by the lungs, anteriorly by the sternum and posteriorly by the oesophagus and thoracic vertebra. … The endocardium is the innermost layer of tissue that lines the chambers of the heart. Its cells are embryologically and biologically similar to the endothelial cells that line blood vessels. The endocardium also provides protection to the valves and heart chambers. The endocardium underlies the much more voluminous myocardium, the musc… clone an object in python