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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.
Q. Relate the oxide layer and biocompatibility of titanium? The compatibility of a metal with its host environment depends on its resistance to biodegradation and on the degree
Which of the following serves as an actuating signal, or as part of an actuating signal, in a negative feedback system? A. Action potentials in sympathetic neurons that release
Q. Which other phylum of the animal kingdom present species with exoskeleton? Arthropods present exoskeleton made of chitin. Echinoderms do not have exoskeleton but they presen
It is a neural mechanism that plays a role in encoding of new information. Encoding takes place as a result of changes in the strength of synapses among neurons in neuronal network
Electrophoresis is the technique of separating the large molecules (for instance DNA fragments or proteins) from the mixture of identical molecules. An electric current is passed
Dot blot is the technique for measuring the amount of one perticular DNA or RNA in the highly complex mixture. The samples are spotted onto the hybridization membrane (like nitroc
Skeletal muscle A. The myosin head is activated (energized) by the conversion of GTP (that is bound to myosin) to GDP and Pi (that are bound to myosin). B. Detachment of the
Several TCA cycle intermediates can be used as a substrate for the synthesis of other compounds. Succinyl CoA is on intermediate that is directly used for the synthesis of which of
• Blood cultures are critical in the diagnosis and management of IE. • Obtain blood cultures before starting antimicrobial therapy whenever possible. • Intravascular infection l
Explain the Female Reproductive System? The female reproductive system consists of the primary sex organs, the ovaries, and the accessory organs necessary to effect fertilizati
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