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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. What are the cell movements and how are these movements created? Cell movements are movements executed by cell structures, like the movements of flagella and cilia, the pseu
1) What are some characteristics that define the lifestyle of a parasitic nematode? 2) What are beneficial nematodes? Discuss their significance
Electron Transport Inhibitors Several compounds, including specific drugs, chemicals and antibiotics have been known to inhibit the electron transfer reactions at specific
Monitoring for infections Many infections are common in diabetic patient. Most prominent are urinary tract infections. Others are skin problems (carbuncles), ear problems (otit
Question 1: What is the benefit of alternative splicing? Could there also be drawbacks of Alternative splicing? If yes, mention the same. Definitions of alternative splic
Symptoms: The E. coli gastroenteritis syndrome is caused by the ingestion of 10 6 -10 10 viable cells/g that must colonize the small intestine and produce enterotoxin. The syndr
If two organisms share the similar kingdom, must they also share the similar domain? Explain. Two organisms that share the similar kingdom must also share the similar domain b
Define the Contraceptive Morbidity Contraceptive morbidity, which covers any condition that result from efforts (other than abortion) to limit fertility, whether they are tradi
In most axons, myelin sheath is interrupted at intervals of about 1 millimeter or more. These interruptions are known as: a) Collaterals b) Nodes of Ranvier (pron: ron-vee-ay)
Q. What are the effects of somatostatin for the pancreatic hormonal secretion? Somatostatin inhibits both glucagon and insulin secretions.
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