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Urine Formation by Excretory Organs
Urine formation by the excretory organs involves
While a variety of renal organs are encountered in the animal kingdom, the principles of their function-are basically similar. In all cases, renal function involves the initial -appearance in the tubular lumen of a fluid called primary urine which is isosmotic to blood or body fluid from which it is derived. The composition and volume of the primary urine are later altered by the reabsorption of useful substances (e.g., glucose) into the blood and by the secretion of unwanted substances (e.g., urea) from the blood into the tubular fluid. Both reabsorption and secretion involve active transport. These modifications in the composition and volume of primary urine result in the formation of urine which is the fluid finally excreted from the body.
What are quantitative data? Give two examples of quantitative data. Quantitative data are data that can be calculated in numbers. Examples contain the dimensions of an objec
Young's Trichromatic Theory According to Young's theory, three types of cones exist, each sensitive to a particular pigment-rythrolabe (red), chlorolabe (green), and cyanolabe
Viridans Streptococci These streptococci, which cause 30 to 65 per cent of NVE case unrelated to drug abuse, are normal inhabitants of the oropharynx, characteristically produce
Making a rock collection A collection of the common rocks found in the community can be made by asking every pupil to bring in single piece of rock. Explain to the pupils that
Which of the following statements is correct? A. Hemoglobin binds O2 more tightly at pH 7.2 than at pH 7.4. B. Fetal hemoglobin under physiological conditions binds O2 more t
Hexokinase, that catalyzes the first irreversible step of glycolysis, is inhibited by glucose 6-phosphate. Thus when PFK is inhibited and fructose 6-phosphate builds up an
Describe Congenital Pulmonary Stenosis? The murmur present since birth. PS may be valvular, sub-valvular, or supravalvular. An obstruction may occur within the RV cavity by an
Describe the evolution of egg structures and embryological development for animals that have become adapted to terrestrial existence.
Define Cancer - excessive fat intake? Role of fat in cancer is debatable. High fat intake is indicated as a risk factor to cancer of breast, colon etc. Saturated fat intake has
what''s a mature female sheep called
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