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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 National Approach to deal with the Prevention of Obesity? A number of countries have adopted a national approach to deal with the prevention of obesity and other non-com
PLANE OF CLEAVAGE - Each cleavage of the division zygote is marked by a cleavage furrow. Usually the first cleavage furrow is vertical & passes through the main axis of t
Transposable elements are able to move around the genome by precise or imprecise excision events. What is meant by imprecise excision? A. Imprecise excision refers to a transpo
What is Cilia and Flagella? The surfaces of many eukaryotic cells bear cilia or flagella, built from specialized microtubules. Cilia are tiny brushlike hairs, and flagella are
Explain about the Lactose Intolerance? Lactose is the name of the sugar found in milk. Lactose intolerance, you must be aware by now, occurs when the body is unable to breakdow
In radially symmetric animals there is no posterior, or anterior, right sides to the animal. Rather we refer to two sides of the animal by referring to the location of the mouth. I
In general, which of the following best relates the severity and frequency of natural events, such as storms or droughts? A) Nothing is known about this relationship. B) The severi
1. In guinea pigs, black coat color (B) is dominant to white (b), and a rough coat (R) is dominant to smooth (r). What are the expected genotypic and phenotypic results of the foll
What is population density? Population density is the relation among the number of individuals of a population and the area or volume they occupy. For instance, in 2001 the hum
Q. How are antivenoms produced? Why are antivenoms an example of passive immunization? Antivenoms are obtained by the following process: the venom (antigen) is inoculated into
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