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The heart wall is made up of three layers: the inner endocardium, middle myocardium and outer epicardium. These are surrounded by a double-membraned sac called the pericardium. The innermost layer of the heart is called the endocardium. It is made up of a lining of simple squamous epithelium and covers heart chambers
Heart attack. A heart attack results from a sudden plaque rupture and formation of a thrombus (blood clot) that completely blocks blood flow to a portion of the heart, leading to tissue death . CAD can also result in heart failure or arrhythmias. Heart failure is caused by chronic oxygen deprivation due to reduced blood flow, which weakens the ...
In vertebrates, the circulatory system is a system of organs that includes the heart, blood vessels, and blood which is circulated throughout the body. [1] [2] It includes the cardiovascular system, or vascular system, that consists of the heart and blood vessels (from Greek kardia meaning heart, and Latin vascula meaning vessels).
Two Hearts. Flirty, festive, and super fun, this emoji has a playful, frisky spirit you're gonna wanna call on when sliding into a crush's DMs, texting your new fella, or just commenting on your ...
The aorta (/ eɪ ˈ ɔːr t ə / ay-OR-tə; pl.: aortas or aortae) is the main and largest artery in the human body, originating from the left ventricle of the heart, branching upwards immediately after, and extending down to the abdomen, where it splits at the aortic bifurcation into two smaller arteries (the common iliac arteries).
The use of the heart symbol as a logograph for the English verb "to love" derives from the use in "I ♥ NY," introduced in 1977. [29] Outdoor toilets in Scandinavia traditionally had a heart shaped peephole. In homes a heart symbol made from red painted plywood, or a stuffed fabric one, is often used to assist visitors in finding the modern ...
Humans have a four-chambered heart consisting of the right and left atrium, and the right and left ventricle. The atria are the two upper chambers which pump blood to the two lower ventricles. The right atrium and ventricle are often referred to together as the right heart, and the left atrium and ventricle as the left heart.
Posters: “Word art can lack creativity, meaning, or feel too obvious,” says Thea Bloch-Neal, founder and lead designer of Curated by Thea. “I prefer a vintage poster from an art exhibit or ...