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These circular orifices are located at the upper ends of the outflow parts of the left and right ventricles respectively. The pulmonary orifice which is 3 cms, is 0.5 cm larger than the aortic orifice. The aortic orifice is placed in front and to the right of the mitral orifice. The pulmonary orifice is placed above and to the left of the tricuspid orifice and the aortic orifice intervening between them. The pulmonary orifice is guarded by the pulmonary valve and the aortic orifice by the aortic valve. Each valve consists of three semilunar cusps. Each cusp is triangular. It has a convex edge which is attached to the part of the margin of the orifice. It has two free margins that meet at the apex of the cusp. Each cusp consists of a double fold of endocardium with some fibrous tissue in it. The region of the apex is thickened to form a nodule while crescentric parts near the free edges are called lunules.
Define the Interaction of Vitamin C with iron? Ascorbic acid powerfully enhances absorption of non- haem iron and reverses the inhibiting effect of tea and calcium phosphate. I
Fatty acids have four main biological roles: 1. They are used to create sphingolipids and glycerophospholipids which are necessary elements of biological membranes; 2. Nume
Population You must be familiar with the term 'population'. It is one of the most talked about issues of this century. It is feared that the rapid growth of the world population
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Q. Carbohydrates requirement in pectic ulcer? Carbohydrates: These should provide around 55 to 65% of the daily intake. Emphasis - J should be laid on the consumption of 60th s
Explain the Bohr's model? Bohr's Model : Electrons move around the nucleus at tremendous speeds and occupy most of the space in an atom. The exact position or location of an
Determine some Methods of Blood Glucose Estimation? The various types of methods for estimation of blood glucose can be grouped under two groups: a) Chemical methods b) E
Q What is the main source of energy for living beings on earth? The sun, center of our planetary system and star of the Milky Way galaxy (our galaxy), is the source of the ener
A double-stranded piece of DNA, 100 base pairs in size, is exposed to a high pH environment. This causes all non-valent interactions to be disrupted. What will result from this tre
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