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Q. What are the venous of the valves system? What is their function?
The valves of the venous system are structures inside the veins that permit blood to flow only in the normal way from the tissues to the heart and forbid it to return in the reverse way in favor of gravity. The valves close when the pressure of the fluid column above after, regarding normal flux is higher than the fluid pressure before them. Valves are thus fundamental for the returning of blood to the heart.
Locate the position of the submerged implants. It can be located by the following means: - correlating the radiographs with intraoral position - on slight palpation of soft
EMERGENC E OF CONTEMPORARY BIOLOGY - 1 . Aristotle (384-322BC) - Greek Classified animal species and arranged them in hierarchies. Formulated 'Great chain of
How do white cells differ from red cells (a) In their structure, (b) Their function? a) White cells have nuclei, red cells do not have nucle
Name that gelatin-like substance which is prepared from different species of red algae growing in Asiatic waters. Prepared product appears in the form of cakes, coarse granules and
What is coronary disease? Coronary disease, or coronary insufficiency, is a disease in which there is total or partial obstruction of one or more of the arteries that irrigate
Passage of Pollen Tube In cotton, the pollen produces a tube within an hour which grows on the surface of the stigmatic hairs, and then between the cells of the stigma at the
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The citric acid cycle, also called as the tricarboxylic acid (TCA) cycle or Krebs cycle (after its discoverer in the year of 1937), is used to oxidize the pyruvate making during th
Explain about the Thermoplastic Extrusion? This is a major technique used for vegetable proteins at present. Thermoplastic extrusion leads to dry fibrous and porous granules or
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