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The mitral valve has an anterior and a posterior cusp. The anterior cusp is larger and is attached on the upper right part of the margin of the left AV orifice. The posterior cusp is attached to the lower left part. The anterior cusp intervenes between the Mitral and Aortic orifices. There is, therefore, a forceful blood flow on both surfaces of this cusp. The papillary muscles connected to the cusp of the mitral valve are also called the anterior and posterior. These terms are misleading. The anterior papillary muscle arises from the sterno-costal wall of the ventricle near the lower end. The posterior papillary muscle arises from the diaphragmatic wall near its anterior end. The two muscles run backwards almost parallel to each other and their origins are close together. The chordae tendinae arising from these papillary muscles pass to the adjoining part of the two cusps of the mitral valve.
The mitral valve closes during ventricular contraction (systole) and thus prevents blood from flowing back into the left atrium.The papillary muscles and chordae prevent the valve cusps from prolapsing into the left atrium during systole.All components of the valve apparatus are essential for the proper functioning of the mitral valve.
what is evolution
Define Meitrac System Instrument Removal System a) Trephining bur to remove dentine and uncover the coronal end of the file b) Extractor of appropriate size is placed over t
Why the orange trees are often sprayed with water? Although it is grossly counter-intuitive, whenever citrus groves are in risk of experiencing below-freezing temperatures, the
The aqueous fluid that fills the nuclear region is known as karyolymph, or nucleoplasm. In the fluid there are proteins, enzymes and other significant substances for the nuclear me
CHOROI D - Thin, net like made up of connective tissue, rich in blood vessels. Pigment present, red in rabbit, brown or black in man. It reduces internal reflection.
Q. Medical Management of mitral regurgitation? Vasodilator therapy to reduce afterload may be beneficial in patients with chronic mitral regurgitation, but there is no evidence
In high altitudes is it necessary for the blood to have more or less hemoglobin? In high altitudes the air is rarefied and oxygen concentration is lower than in low altitudes.
The cranial nerves are composed of twelve pairs of nerves which emanate from the nervous tissue of brain. In order to reach their targets they should ultimately exit/enter the cr
Sulphur is one of important of proteins vitamins and hormones. It plays a very crucial role in health of both plants and animals. Most of earth sulphur is tied up in rocks and salt
Q. What is the osseous cavity where the pituitary gland is located? The hypophysis or pituitary gland is located in the sella turcica of the sphenoid bone (one of the bones in
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