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Jul 17, 2017 · 4. The Heart Consists of Four Cell Layers: The endocardium (from endo- + cardi/o + -ium, meaning “inner layer of the heart”) is formed by endothelial cells, and it lines the interior of the heart chambers and valves. The myocardium (from my/o + cardi/o + -ium, meaning “heart muscle”) is the muscular middle layer of the heart that consists of heart muscle cells. The epicardium (from epi ...
Aug 26, 2016 · The heart is a hollow muscular pump located in the chest cavity. It pumps blood through the circulatory system around the body. The left side pumps oxygenated blood through the arteries while the right side pumps deoxygenated blood to the lungs. On average, the heart beats over 2.5 billion times in a lifetime, pumping over 5,000 liters of blood ...
Sep 19, 2018 · Human heart. The human heart is a muscular organ that provides continuous blood circulation through the cardiac cycle. It is located in the middle of the chest behind the sternum. The heart is divided into four chambers - two upper atria and two lower ventricles. Blood flows through the heart via heart valves which allow blood to flow in one ...
Mycardium – middle layer. Serous membrane – epithelial membrane the secretes a thin, watery fluid (lubricant) – eases the movement of the heart. Pericardium – membrane that encloses the heart. Layers of the Heart. Endocardium. Smooth layer. Lines the interior. Valves are made from this layer. Layers of the Heart.
1 Cardiovascular (Circulatory) System 2 3 Systemic Circulation – delivers blood to all body cells and carries away waste Pulmonary Circulation – eliminates carbon dioxide and oxygenates blood (lung pathway) 4 Structure of the Heart Heart Size – about 14 cm x 9 cm (the size of a fist). Located in the mediastinum. between the 2 nd rib and ...
Structure of the Heart. Size and Location. Coverings. Wall of the heart. Chambers and Valves. Path of Blood. Blood Supply. Your heart pumps 7,000 L of blood every day! It will contract . 2.5 billion times. in your lifetime.
Explore the PowerPoint presentation for Chapter 20: The Heart, covering the essential aspects of heart anatomy and physiology.
