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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.
The left atrio-ventricular aperture in man is guarded by
FORMATION OF EGG MEMBRANE Ovum with egg membrane is called ova / egg. On the basis of origin the egg membrane are of three types & 1 . PRIMARY EGG MEMBRANE It is
Q. What is the difference between the concepts of epidemic disease and endemic disease? The Endemic diseases are those that often affect people of a given place, many or few in
Natural selection can therefore mean differential reproduction among members of the sarne gene pool. We earlier said that selection would promote those alleles that give rise to ph
Explain about the Lipoproteins? These are the Multicomponent complexes of lipids and proteins that form distinct molecular aggregates. They contain polar and neutral lipids, ch
Define the Bioavailability of cyanocobalamin? Vitamin B 12 is widely available. Availability is more from non-vegetarian foods as described earlier under the food sources sec
What is the significance of Rhynchocoel? The unique body cavity of the Nemertean worms, which comprise the retractable proboscis. There is some debate on whether this is a true
Style of Stigma Interaction The style has been distinguished into two types: In open styles a stylar canal is present which is lined with a well-developed glandul
Most dental offices have a designated area for instrument reprocessing that is separate from the dental treatment room. This is ideal, since cleaning, sterilizing and storing instr
A common biocontrol agent for the control of plant diseases is : 1. Baculovirus 2. Bacillus thuringiensis 3. Glomus 4. Trichoderma Trichoderma
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