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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.
Isolation and identification of the etiological agent: Isolation of the etiological agent is attempted in chicken embryos, cell cultures, laboratory animals, culture medi
briefly explain the following feeding mechanisms in holozoic animals a) filter feeding b) fluid feeding c)deposit feeding
What is Erythropoietin (EPO) A. is secreted by peritubular interstitial cells of the kidney cortex. B. acts by increasing the production of red blood cells by cells in
D-glucose differs from D-galactose only in the arrangement around carbon 4. Therefore D-glucose and D-galactose are- Select one: a. enantiomers b. epimers c. mirror ima
Phylum Bryophyta The Bryophytes include the mosses and their close relatives. They are widely diverse and grow in a variety of place. 1) Life cycle shows alternation of gene
In many animals, glucose, rather than starch, is transported by the blood through the body to all the cells. Starches in many foods are digested to yield glucose. Why is the digest
Explain Lamda and Kappa-carrageenan Lamda-carrageenan at a concentration of 0.05% produces thickening and stabilization. Sodium salts of Lamda and Kappa-carrageenan at a co
Evolution of heart in higher animals The circulatory system in higher animals has undergone several changes during evolution. The heart has become totally muscular. Th
What is firing rate of carotid artery baroreceptors At 1:00 AM, person X's blood pressure is equal to the blood pressure set point. At 1:01 AM, there is a decrease in the firi
justify the claim that paramecium is the highly evolved protozoan basing on the morphological and physiological features .
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