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The Muscles of the Heart •The heart has specific muscles that cause the heart to contract and open and close the heart values. Some of these muscles are: •Trabeculae Carneae –Irregular muscles of the ventricles •Chordae Tendineae –Small cords that connect the heart values to the papillary muscles
The human heart is a muscle, about the size of your fist. It works like a pump, sending blood around your body, allowing your organs to function. If you are being treated for heart rhythm problems, you may find it helpful to read this factsheet in order to understand how your heart and its electrical system functions.
The Heart The heart is a hollow, muscular organ about the size of a fist. It is responsible for pumping blood through the blood vessels by repeated, rhythmic contractions. The heart is composed of cardiac muscle, an involuntary muscle tissue that is found only within this organ.
Heart: A powerful muscle slightly larger than a clenched fist. It is composed of four chambers, two upper (the atria) and two lower (the ventricles). It works as a pump to send oxygen-rich blood through all the parts of the body. A human heart beats an average of 100,000 times per day.
This Osmosis High-Yield Note provides an overview of Cardiovascular Anatomy and Physiology essentials. All Osmosis Notes are clearly laid-out and contain striking images, tables, and diagrams to help visual learners understand complex topics quickly and efficiently.
heart is a muscular pump that circulates blood through blood vessels by rhythmically contracting and relaxing. The heart sits in a cavity behind the sternum (breastbone). The average adult heart is around 12cm long from top to bottom. The heart is made up of four chambers, two on the right and two on the left.
Cardiac muscle is an involuntary striated muscle, which is mononucleated and has cross-striations formed by alternate segments of thick and thin protein filaments,
