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Exercise temporarily increases the rate, but lowers it in the long term, and is good for heart health. [12] Cardiovascular diseases are the most common cause of death globally as of 2008, accounting for 30% of all human deaths. [13] [14] Of these more than three-quarters are a result of coronary artery disease and stroke. [13]
The heart is a muscular organ situated in the mediastinum.It consists of four chambers, four valves, two main arteries (the coronary arteries), and the conduction system. The left and right sides of the heart have different functions: the right side receives de-oxygenated blood through the superior and inferior venae cavae and pumps blood to the lungs through the pulmonary artery, and the left ...
The right heart pumps deoxygenated blood to the lungs in the pulmonary circulation. In the human heart there is one atrium and one ventricle for each circulation, and with both a systemic and a pulmonary circulation there are four chambers in total: left atrium, left ventricle, right atrium and right ventricle. The right atrium is the upper ...
The Visible Human Project is an effort to create a detailed data set of cross-sectional photographs of the human body, in order to facilitate anatomy visualization applications. It is used as a tool for the progression of medical findings, in which these findings link anatomy to its audiences. [1] A male and a female cadaver were cut into thin ...
Best “Sweet” Breakfast: Oatmeal with Berries, Nuts and a Drizzle of Honey. Ingredients: Rolled oats (or steel-cut oats for a less-processed option) Plant-based milk (almond, soy or oat milk ...
2. Swimming. Shutterstock. The pool isn't just for taking a dip to cool off on a hot summer's day. Swimming can provide an excellent cardiovascular workout. "The cool water maintains your body ...
Cardiac physiology or heart function is the study of healthy, unimpaired function of the heart: involving blood flow; myocardium structure; the electrical conduction system of the heart; the cardiac cycle and cardiac output and how these interact and depend on one another.
Cardiac muscle. Cardiac muscle (also called heart muscle or myocardium) is one of three types of vertebrate muscle tissues, the others being skeletal muscle and smooth muscle. It is an involuntary, striated muscle that constitutes the main tissue of the wall of the heart. The cardiac muscle (myocardium) forms a thick middle layer between the ...